Chromium Containing Patents (Class 148/427)
  • Patent number: 6599346
    Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of: at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: July 29, 2003
    Assignee: UT-Battelle, LLC
    Inventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger
  • Publication number: 20030070733
    Abstract: A single step heat treatment for Ni—Cr—Mo alloys containing from 12% to 19% chromium and from 18% to 23% molybdenum provides higher yield strength, high tensile strength and other mechanical properties comparable to those observed in similar alloys age-hardened according to current practices. This treatment is done over a total time of at least 24 hours and preferably less than 50 hours. However, the treatment works for only those alloys having alloying elements present in amounts according to an equation here disclosed.
    Type: Application
    Filed: June 28, 2001
    Publication date: April 17, 2003
    Inventors: Lee M. Pike, Dwaine L. Klarstrom
  • Publication number: 20030051777
    Abstract: A solution treatment is firstly performed for a non-heat-treated Ni based alloy having a composition equivalent to that of Inconel 718 (registered trademark). Subsequently, a primary aging treatment is applied by holding the Ni based alloy at 610 to 660° C. for 5 to 10 hours. After that, a secondary aging treatment is performed by holding the Ni based alloy at 710 to 760° C. for 5 to 10 hours. There are 700 or more precipitates per &mgr;m2, in which each precipitate has a longer diameter of not less than 0.5 nm, in a metal microstructure of the Ni based alloy. Some of the precipitates are large precipitates having average diameters of 25 nm to 1 &mgr;m. There are 10 or more large precipitates per &mgr;m2. A forging die is produced with the Ni based alloy.
    Type: Application
    Filed: September 17, 2002
    Publication date: March 20, 2003
    Inventor: Koji Sudo
  • Publication number: 20030049155
    Abstract: A two step heat treatment for Ni—Cr—Mo alloys containing from 12% to 23.5% chromium provides higher yield strength, high tensile strength and other mechanical properties comparable to those observed in similar alloys age-hardened according to current practices. This treatment is done over a total time of not more than 50 hours. However, the treatment works for only those alloys having alloying elements present in amounts according to an equation here disclosed.
    Type: Application
    Filed: June 28, 2001
    Publication date: March 13, 2003
    Inventors: Lee M. Pike, Dwaine L. Klarstrom, Michael F. Rothman
  • Patent number: 6521060
    Abstract: The improved filler metal for use in the welding of Ni—Cr—W alloys that are excellent in high-temperature strength and corrosion resistance and which are used in the hot-zone structures of high-temperature gas-cooled reactors, gas turbines, etc comprises on a mass basis C≦0.05%, Mn≦0.1%, Si≦0.1% (Mn+Si≦0.1%), Cr=17-20%, W=20-23% (Cr+W=39-43%), Ti=0.02-0.1%, Zr≦0.03%, Y≦0.015%, B=0.0003-0.01%, Al≦0.1%, Mg≦0.05%, Nb≦0.06% (10Zr+10B+5Nb+2Y≦0.3%), the balance being Ni and incidental impurities.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: February 18, 2003
    Assignees: Japan Atomic Energy Research Institute, Nippon Welding Rod Co., Ltd.
    Inventors: Yuji Kurata, Hirokazu Tsuji, Hajime Nakajima, Masami Shindo, Teiichiro Saito, Tamao Takatsu
  • Publication number: 20020195175
    Abstract: A free-cutting Ni-base heat-resistant alloy excellent in the high-temperature strength and corrosion resistance was proposed. The alloy contains Ni as a major component, 0.01 to 0.3 wt % of C and 14 to 35 wt % of Cr, and further contains at least one element selected from Ti, Zr and Hf in a total amount of 0.1 to 6 wt %, and S in an amount of 0.015 to 0.5 wt %. The alloy has dispersed in the matrix thereof a machinability improving compound phase, where such phase contains any one of Ti, Zr and Hf as a major constituent of the metal elements, essentially contains C and either S or Se as a binding component for such metal elements. The alloy also satisfies the relations of WTi+0.53WZr+0.27WHf>2WC+0.75WS and WC>0.37WS, where WTi represents Ti content (wt %), WZr represents Zr content (wt %), WHf represents Hf content (wt %), WC represents C content (wt %) and WS represents S content (wt %).
    Type: Application
    Filed: May 31, 2002
    Publication date: December 26, 2002
    Inventors: Kiyohito Ishida, Katsunari Oikawa, Shigeki Ueta, Toshiharu Noda, Takashi Ebata
  • Patent number: 6482528
    Abstract: (1) A nickel-base alloy product having, on the surface thereof, an oxide film comprising at least two layers, namely a first layer mainly composed of Cr2O3 and having a chromium content of not less than 50% relative to the total amount of metal elements and a second layer occurring outside the first layer and mainly composed of MnCr2O4, wherein the grain size of Cr2O3 crystals in the first layer is 50 to 1,000 nm and the total oxide film thickness is 180 to 1,500 nm. (2) A method of producing the nickel-base alloy product as specified above under (1) which comprises subjecting a nickel-base alloy product to oxide film formation treatment by maintaining the same at a temperature of 650 to 1,200° C. in a hydrogen atmosphere or hydrogen-argon mixed atmosphere showing a dew point of −60° C. to +20° C. for 1 to 1,200 minutes.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: November 19, 2002
    Assignee: Sumitomo Metal Industries, Inc.
    Inventors: Hiroyuki Anada, Kazuyuki Kitamura, Toshihiro Imoto, Osamu Miyahara
  • Patent number: 6482275
    Abstract: A nickel based alloy is provided which includes, in weight percentage, carbon from about 2 to about 3; chromium from about 30 to about 40; tungsten from about 12 to about 18; iron from about 3.5 to about 8.5; molybdenum from about 1 to about 8; manganese up to about 0.5; silicon up to about 1.0; and the balance nickel and incidental impurities. The alloy is useful for internal combustion engine valve seat inserts and the like.
    Type: Grant
    Filed: July 27, 2000
    Date of Patent: November 19, 2002
    Assignee: L. E. Jones Company
    Inventor: Cong Yue Qiao
  • Patent number: 6461744
    Abstract: A description follows of an article based on a nickel-chromium-silicon metal alloy, including microcrystalline borides, obtained by the rapid solidification and subsequent thermal treatment of a nickel-chromium-boron-silicon metal alloy comprising from 39.0 to 69.4 atom % of nickel, from 11.8 to 33.9 atom % of chromium, from 7.6 to 27.4 atom % of boron and from 7.6 to 17.5 atom % of silicon. The above article is preferably a tape or a sheet or a fiber having high mechanical properties and is particularly resistant to oxidation.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: October 8, 2002
    Assignee: Edison Termoelettrica S.p.A.
    Inventors: Giovanni Giunchi, Sergio Ceresara
  • Patent number: 6375766
    Abstract: A nickel-base alloy containing a continuous matrix composed of a solid solution of chromium in nickel and a precipitate granularly dispersed in and coherent with the matrix and composed of an intermetallic nickel compound. The intermetallic nickel compound contains gallium that replaces aluminum and/or titanium partly or completely. The invention also relates to an article of manufacture containing a substrate formed of such a nickel-base alloy.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: April 23, 2002
    Assignee: Siemens Aktiengesellschaft
    Inventor: Norbert Czech
  • Publication number: 20020001711
    Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy perform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.
    Type: Application
    Filed: August 16, 2001
    Publication date: January 3, 2002
    Inventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger
  • Patent number: 6200688
    Abstract: A wear resistant alloy is provided having a composition by weight of 1.0-2.5 C, 1.5-4.5 Si, 8.0-20.0 Cr, 9.0-20.0 W and/or Mo, 0.5-2.0 Nb, 20.0-40.0 Fe, and the balance being Ni (>25.0). This alloy provides excellent wear resistance and good hot hardness with relatively low cost compared to prior art nickel base alloys. The alloy has particular use as a valve seat insert materials in diesel fuel internal combustion engines.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: March 13, 2001
    Assignee: Winsert, Inc.
    Inventors: Xuecheng Liang, Gary R. Strong
  • Patent number: 6197437
    Abstract: A composite barrel for use in extrusion or injection molding is disclosed. The composite barrel includes an outer housing having a cylindrical bore that extends throughout the length of the outer housing. A wear-resistant lining is disposed on an interior surface that defines the cylindrical bore. The lining is fabricated from an alloy that includes a base metal and phosphorus and the lining may contain hard abrasion-resistant particulate, such as tungsten carbide. The base metal is nickel or cobalt or a mixture of nickel and cobalt. The alloy is typically applied by centrifugal casting and can be cast in a nitrogen-rich atmosphere without creating undesirable lining porosity. Such linings can be made for a fraction of the cost of comparable linings that must be cast under vacuum or in an atmosphere of argon.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: March 6, 2001
    Assignee: Wall Colmonoy Corporation
    Inventors: David Martin Bielec, Samuel Conrad DuBois, Subramaniam Rangaswamy
  • Patent number: 6187115
    Abstract: A material in powder or wire form on a nickel basis for the production of a coating with a high level of resistance to corrosion and wear by means of a thermal coating process is of the following composition (in percent by weight): C 0.005-1.0;  Cr 10.0-26.0; Mo  8.0-20.0; Fe  0.1-10.0; Si 3.0-7.0; B 1.0-4.0; Cu 0.1-5.0; Ni Balance. The material in powder form can be alloyed and sprayed out of the melt or agglomerated out of different alloyed and non-alloyed metal powders. The coating material can also be used in the form of a filling wire or an alloyed and cast bar material.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: February 13, 2001
    Assignee: Castolin S.A.
    Inventors: Ingo Kretschmer, Peter Heimgartner, Gary Robert Heath
  • Patent number: 6177046
    Abstract: Improved Ni, Fe and Co based superalloys having excellent oxidation resistance and weldability. The superalloys are obtained by at least partially replacing the Ni in conventional superalloys with Pd. The alloys may also contain strengtheners and modifiers such as Co, W, Mo, V, Ti, Re, Ta, Nb, C, B, Zr, Y, and Hf. The superalloy has good strength, improved weldability and excellent oxidation resistance suitable for use in many aerospace and power generation turbine applications. A preferred embodiment comprises (in wt %) 1-9% (Al+Ti), 0-0.01% B, 0-0.15% C, 0-25% Co, 5-30% Cr, 0-10% Fe, 0-0.009% (Hf+Y+Sc), 1-15% (Mo+W), 0-8% (Nb+Ta), 40-68% Ni, 4-32% Pd, 0-10% (Re+Rh), 0-5% V, and 0-0.015% Zr.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: January 23, 2001
    Assignee: The Penn State Research Foundation
    Inventors: George Simkovich, Eric J. Whitney
  • Patent number: 6130006
    Abstract: There is provided a hydrogen-absorbing alloy which contains an alloy ingot manufactured by means of a casting or sintering method or a pulverized product of the alloy ingot, and the alloy ingot being represented by the following general formula (1),(Mg.sub.1-a-b R1.sub.a M1.sub.b)Ni.sub.z (1)wherein R1 is at least one element selected from rare earth elements (including Y), M1 is at least one element selected from elements having a larger electronegativity than that of Mg (excluding the elements of R1, Cr, Mn, Fe, Co, Cu, Zn and Ni), and a, b and z are respectively a number satisfying conditions 0.1.ltoreq.a.ltoreq.0.8, 0<b.ltoreq.0.9, 1-a-b>0, and 3.ltoreq.z.ltoreq.3.8.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: October 10, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tatsuoki Kohno, Isao Sakai, Masaaki Yamamoto, Motoya Kanda, Hideki Yoshida, Fumiyuki Kawashima, Takao Sawa, Takamichi Inaba, Shusuke Inada, Hirotaka Hayashida, Hiroshi Kitayama
  • Patent number: 6113849
    Abstract: Nickel-based alloy, the chemical composition of which comprises, by weight, from 24.5% to 26.5% chromium and from 13.5% to 16.5% molybdenum, the remainder being nickel, optionally one or more complementary alloy elements selected from iron, aluminium and magnesium, and impurities resulting from processing. Drawn wire made of nickel-based alloy, and welding electrode including a drawn wire made of nickel-based alloy.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: September 5, 2000
    Assignee: Ugine-Savoie Imphy S.A.
    Inventors: Albert Bruyere, Jean-Bernard Couffin, Ricardo Cozar, Jacques Levigoureux
  • Patent number: 6066291
    Abstract: Castings based on the nickel aluminide intermetallic alloy IC-221M were melted and poured with an addition of enough molybdenum to bring its concentration to 5 weight %. This resulted in a minimization or elimination of the nickel-zirconium eutectic phase in the dies machined and prepared from these castings. The benefit of eliminating or minimizing the nickel zirconium eutectic phase with the addition of measurable amounts of molybdenum (Mo) to the nickel aluminide (Ni.sub.3 Al) alloy is the increase in the useful service life of the tooling made from it; thus providing the advantages of increased productivity, enhanced quality and reduced costs in a manufacturing setting. Heat treatment of the dies machined and prepared from these castings was also undertaken. The heat treatment regimen includes solution treatment at 2100.degree. F. for 24 hours and aging from between 1150.degree. F. and 1300.degree. F. for between 12 to 24 hours.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: May 23, 2000
    Assignee: United Defense, L.P.
    Inventors: Chien-Hua Chen, Guy Monroe Maddox, Jr., John Edward Orth, Elliott Lee Turbeville
  • Patent number: 6027584
    Abstract: A Ni-base alloy composition comprises of Zr, B, and Si. Zr and B are coupled to each other to form ZrB.sub.2, the B and Zr suppress melting points of the Ni-base alloy composition. Further, a Ni-base alloy composition also comprises Cr, Ti, and Ni, where the Ti and Cr suppress melting points.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: February 22, 2000
    Assignee: General Electric Company
    Inventors: Melvin Robert Jackson, Stephen Joseph Ferrigno, David Edwin Budinger
  • Patent number: 6027583
    Abstract: A material in powder or wire form on a nickel basis for the production of a coating with a high level of resistance to corrosion and wear by means of a thermal coating process is of the following composition (in percent by weight):______________________________________ C 0.005-1.0; Cr 10.0-26.0; Mo 8.0-20.0; Fe 0.1-10.0; Si 3.0-7.0; B 1.0-4.0; Cu 0.1-5.0; Ni Balance. ______________________________________The material in powder form can be alloyed and sprayed out of the melt or agglomerated out of different alloyed and non-alloyed metal powders. The coating material can also be used in the form of a filling wire or an alloyed and cast bar material.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: February 22, 2000
    Assignee: Castolin S.A.
    Inventors: Ingo Kretschmer, Peter Heimgartner, Gary Robert Heath
  • Patent number: 6010581
    Abstract: An austenitic Ni-based alloy with improved workability, good corrosion resistance and good structure stability useful as heat exchanger tubing in sulphur-, chloride- or alkaline-containing environments. The material has an austenitic structure which contains in weight-% up to 0.025% C, 20-27% Cr, 8-12% Mo, up to 0.5% Si, up to 0.5% Mn, up to 0.3% Al, up to 0.1% N, 3-15% Fe, up to 0.5% Ti, up to 0.5% Nb, the remainder being Ni and usual impurities.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: January 4, 2000
    Assignee: Sandvik AB
    Inventors: Jonas Rosen, Lars Nylof, Sven Larsson
  • Patent number: 5968450
    Abstract: The present invention provides a scandium containing hydrogen absorption alloy having an alloy phase which is represented by the following formula;(Sc.sub.x A.sub.1-x)(B'.sub.y B".sub.2-y).sub.zwherein A is at least one of Ti, Zr, rare-earth elements, a mixture of Ti and at least one of Zr, Ta, Nb, Hf, Ca and rare-earth elements, and a mixture of Zr and at least one of Ti, Ta, Nb, Hf, Ca and rare-earth elements; B'is at least one of Ni, Fe, Co and a mixture of at least one of Ni, Fe and Co and at least one of Al, Ga, Si and In; B" is at least one of Mn, V, Cr, Nb, Ti and a mixture of at least one of Mn, V, Cr, Nb and Ti and at least one of Al, Ga, Si and In; x represents 0<x.ltoreq.1; y represents 0<y<2; and z represents 0.75.ltoreq.z.ltoreq.1.2, and the alloy phase includes at least one of a part which belongs to a C15 type Laves phase and a part which belongs to a C14 type Laves phase, and a hydrogen absorption electrode which includes the alloy.
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: October 19, 1999
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Masato Yoshida, Takitaro Yamaguchi, Takao Ogura
  • Patent number: 5964966
    Abstract: Specific alloys, in particular Ni-based alloys, that can be biaxially textured, with a well-developed, single component texture are disclosed. These alloys have a significantly reduced Curie point, which is very desirable from the point of view of superconductivity applications. The biaxially textured alloy substrates also possess greatly enhanced mechanical properties (yield strength, ultimate tensile strength) which are essential for most applications, in particular, superconductors. A method is disclosed for producing complex multicomponent alloys which have the ideal physical properties for specific applications, such as lattice parameter, degree of magnetism and mechanical strength, and which cannot be fabricated in textured form. In addition, a method for making ultra thin biaxially textured substrates with complex compositions is disclosed.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: October 12, 1999
    Assignee: Lockheed Martin Energy Research Corporation
    Inventors: Amit Goyal, Eliot D. Specht, Donald M. Kroeger, Mariappan Paranthaman
  • Patent number: 5935350
    Abstract: A nickel based hardfacing alloy having the following elemental constituents, by weight: Cr, 16-22%; Mo, 1-7%; Si, 2.5-3.7%; C, 0.8-1.4%; B, 2-3%; Fe, 2-3.9%; Co, 4.3-17%; Ni and incidental impurities, balance. The alloy is in gas-atomized powder form suitable for deposition by plasma transferred arc welding, has a hardness in the range of about 50 Rc to 60 Rc, a coefficient of friction in the range of about 0.12 to 0.13, an ASTM G-65 wear rating in the range of about 20 to 26, and an ASTM G-77 wear rating in the range of about 0.0 to 0.074. A method of enhancing the abrasive wear resistance and metal-to-metal wear resistance of a substrate by welding a Ni based alloy having at least 40% Ni by weight, between 4% and 18% Co by weight, and between 2% and 3% B, onto wear surfaces of the substrate as a coating having a thickness between about 0.025 in. and about 0.5 in. A plastic extruder screw comprising a metallic body having screw flights and a coating on the screw flights, which coating is between about 0.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: August 10, 1999
    Assignee: Deloro Stellite Company, Inc
    Inventors: Damodaran Raghu, Martin E. Lohrman
  • Patent number: 5925197
    Abstract: A sintered hard alloy for tools for cutting wood. The alloy according to the present invention comprises 30-98 volume % hard constituents in a binder phase based on nickel and/or cobalt. The hard constituents comprise oxides, carbides, nitrides and/or borides of Al, Zr, Si and/or Ti, preferably Al.sub.2 O.sub.3, ZrC, ZrO.sub.2, SiC, Si.sub.3 N.sub.4 and/or TiB.sub.2 with a mean grain size <1.5 .mu.m, preferably <1.0 .mu.m. The binder phase comprises in solution, in weight %, Co max 90, Ni max 90, Cr 5-45.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: July 20, 1999
    Assignee: Sandvik AB
    Inventor: Enrico Galli
  • Patent number: 5882440
    Abstract: A heat-resistant alloy comprising, as expressed in % by weight, 0.03 to 0.1% of C, 0.2 to 0.7% of Si, 0.2 to 0.7% of Mn, 42 to 60% of Ni, 25 to 35%0 of Cr, 8 to 20% of W, over 0% to not more than 8% Mo, over 0% to not more than 5% of Co, and the balance substantially Fe. The alloy has improved resistance to compressive deformation and oxidation resistance for use in oxidizing atmospheres having a high temperature of 1250.degree. C.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: March 16, 1999
    Assignee: Kubota Corporation
    Inventors: Akira Shinosaki, Toru Kawai, Yoshihide Shida
  • Patent number: 5817193
    Abstract: In the fabrication of components from a face centered cubic alloy, wherein the alloy is cold worked and annealed, the cold working is carried out in a number of separate steps, each step being followed by an annealing step. The resultant product has a grain size not exceeding 30 microns, a "special" grain boundary fraction not less than 60%, and major crystallographic texture intensities all being less than twice that of random values. The product has a greatly enhanced resistance to intergranular degradation and stress corrosion cracking, and possesses highly isotropic bulk properties.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: October 6, 1998
    Inventor: Gino Palumbo
  • Patent number: 5817222
    Abstract: A rare earth metal-nickel hydrogen storage alloy having a composition represented by the formula (1)RNi.sub.x-y M.sub.y (1)(wherein R stands for La, Ce, Pr, Nd, or mixtures thereof, M stands for Co, Al, Mn, Fe, Cu, Zr, Ti, Mo, Si, V, Cr, Nb, Hf, Ta, W, B, C, or mixtures thereof, x satisfies the formula of 3.5.ltoreq.x<5, and y satisfies the formula of 0<y.ltoreq.2, crystals in the alloy having a LaNi.sub.5 type single phase structure, the alloy including in an amount of not less than 5 volume % and less than 95 volume % thereof crystals each containing not less than 2 and less than 17 antiphase boundaries extending perpendicular to C-axis of a grain of the crystal in the alloy per 20 nm along the C-axis, a method of producing the same, and an anode for a nickel hydrogen rechargeable battery containing as an anode material the above rare earth metal-nickel hydrogen storage alloy and an electrically conductive material.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: October 6, 1998
    Assignee: Santoku Metal Industry Co., Ltd.
    Inventor: Akihito Kaneko
  • Patent number: 5698006
    Abstract: The improved intermetallic compounds represented by xNiAl+X (x=50.5-63.5), with dopant element X being selected from among Ti, Fe, V, W, Cr, Cu, Mo, Nb, Ta, Hf, Zr and B, are lightweight and have satisfactory oxidation resistance and high-temperature strength and, hence, are useful as structural materials in aerospace (as in space shuttles) and nuclear fields (for use in reprocessing facilities). A representative intermetallic compound having the formula NiAl+x(Mo/Re)+cB, wherein the ratio of Ni:Al is 56.5:43.5, the ratio of Mo:Re is either 1:1 or 1:0.5, x is between 0.1 and 1 at. %, and c is from 0 to 0.2 at. %, is disclosed.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: December 16, 1997
    Assignee: Japan Atomic Energy Research Institute
    Inventor: Shintaro Ishiyama
  • Patent number: 5556594
    Abstract: An age hardenable nickel base chromium, molybdenum, alloy as well as intermediate products and articles made therefrom are disclosed which, in the solution treated and age hardened condition, have a 0.2% yield strength greater than 100 ksi combined with resistance to pitting and crevice corrosion and to stress corrosion cracking in chloride and sulfide environments at elevated temperatures up to about 500.degree. F. without requiring working below the recrystallization temperature of the alloy. Broad and preferred ranges are disclosed as follows:______________________________________ Broad (w/o) Preferred (w/o) ______________________________________ C 0.1 Max. 0.03 Max. Mn 5 Max. 2 Max. Si 1 Max. 0.5 Max. P 0.03 Max. 0.015 Max. S 0.03 Max. 0.010 Max. Cr 16-24 18-22 Mo 7-12 7.5-11 W 4 Max. -- Nb 2-6 2.75-4.25 Ti 0.50-2.5 0.75-1.5 Al Trace-1 0.05-0.35 B 0.02 Max. 0.001-0.006 Zr 0.50 Max. 0.08 Max. Co 5 Max. -- Cu 0-3 0.5 Max. N 0.04 Max. 0.01 Max. Fe 20 Max.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: September 17, 1996
    Assignee: CRS Holdings, Inc.
    Inventors: Richard B. Frank, Terry A. DeBold, Sunil Widge, James W. Martin
  • Patent number: 5529642
    Abstract: A nickel-based alloy which is excellent not only in anti-corrosion properties but also in workability is disclosed. The alloy contains 15 to 35 weight % of chromium; 6 to 24 weight % of molybdenum; wherein the sum of chromium plus molybdenum is no greater than 43 weight %; 1.1 to 8 weight % of tantalum; and balance nickel and unavoidable impurities. The alloy may optionally include no greater than 0.1 weight % of nitrogen; no greater than 0.3 weight % of magnesium, no greater than 3 weight % of manganese, no greater than 0.3 weight % of silicon, no greater than 0.1 weight % of carbon, no greater than 6 weight % of iron, no greater than 0.1 weight % of zirconium, no greater than 0.01 weight % of calcium, no greater than 1 weight % of niobium, no greater than 4 weight % of tungsten, no greater than 4 weight % of copper, no greater than 0.8 weight % of titanium, no greater than 0.8 weight % of aluminum, no greater than 5 weight % of cobalt, no greater than 0.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: June 25, 1996
    Assignee: Mitsubishi Materials Corporation
    Inventors: Katsuo Sugahara, Hideo Kitamura, Saburo Wakita, Koji Toyokura, Yoshio Takizawa, Tsutomu Takahashi
  • Patent number: 5516485
    Abstract: Air meltable, weldable cast alloys of high hot strength and hot gas corrosion resistance especially in the service temperature range of about 1800.degree. F. to 2100.degree. F. which consist essentially of:______________________________________ Nickel 41-54% by weight Chromium 24-29% Iron 8-18% Cobalt 3-8% Tungsten 4.5-6.5% Molybdenum 4-6.5% Niobium 0.8-2% Manganese 0.1-1.5% Silicon 0.1-1.5% Carbon 0.2-0.4% ______________________________________provided, that the nickel plus cobalt content is at least about 45%.
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: May 14, 1996
    Assignee: Carondelet Foundry Company
    Inventor: John H. Culling
  • Patent number: 5460664
    Abstract: A nickel-based alloy useful in the manufacture of a glass fibre centrifuge of which the composition consists essentially of the following elements expressed as percentage by weight:______________________________________ Cr 27.5-29.5% W 6.5-7.8% C 0.69-0.73% Fe 7-10% ______________________________________the remainder substantially being nickel and having in its crystalline structure M.sub.23 C.sub.6 type carbides, M being chromium, at least one equivalent metal, or combination thereof, the M.sub.23 C.sub.6 carbides being substantially secondary.
    Type: Grant
    Filed: April 12, 1994
    Date of Patent: October 24, 1995
    Assignee: Isover Saint-Gobain
    Inventor: Stella Vasseur
  • Patent number: 5387294
    Abstract: A hard surfacing alloy which has a Rockwell C hardness of greater than about 50 and which includes tungsten carbide, chromium carbide and bi-metallic chromium and tungsten carbide crystals which are precipitated in the alloy. Alloys of the present invention in their nominal composition comprise from about 12% to about 20% tungsten; from about 13% to about 30% chromium; an effective amount of carbon for forming carbides with the tungsten and chromium and include effective amounts of fluxes and melting point depressants and the like. The balance of the composition is nickel. The alloys include precipitated carbide crystals of chromium, tungsten and bi-metallic mixtures thereof which are interspersed through the hard surfacing alloy and are metallurgically bonded in the metal matrix of the alloy. The alloys have extremely low porosities and therefore are suitable for glass plunger and other applications where low porosity is essential.
    Type: Grant
    Filed: May 19, 1992
    Date of Patent: February 7, 1995
    Assignee: Wall Comonoy Corporation
    Inventor: Samuel C. DuBois
  • Patent number: 5374323
    Abstract: Disclosed is a large alloy forging, the forging having an alloy composition selected from one of a nickel base alloy, a cobalt-chromium-nickel base alloy, a nickel-cobalt base alloy and an iron-nickel-chromium-molybdenum alloy, the forging having a grain size of ASTM grain size 3 or finer, as measured by ASTM method E112 and having a tensile strength in the range of 135 to 175 KSI.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: December 20, 1994
    Assignee: Aluminum Company of America
    Inventors: G. William Kuhlman, Richard A. Beaumont, Daniel F. Carbaugh, David Anderson, Al Farrell, Amiya K. Chakrabarti, Kenneth P. Kinnear
  • Patent number: 5360496
    Abstract: Disclosed is a large alloy forging and method for making it. The forging having an alloy composition selected from one of a nickel base alloy, a cobalt-chromium-nickel base alloy, a nickel-cobalt base alloy and an iron-nickel-chromium-molybdenum alloy and having a grain size of ASTM grain size 4 or finer, as measured by ASTM method E112 and having a tensile strength in the range of 135 to 175 KSI. The process includes: (1) four upset forgings, (2) a rapid cooling after the final upset cooling, (3) a first and second upset forging with a reduction greater than 50%, (4) a third upset forging with a reduction greater than 25.%, and (5) a forging process with a fourth upset forging with a reduction greater than 50%.
    Type: Grant
    Filed: April 7, 1993
    Date of Patent: November 1, 1994
    Assignee: Aluminum Company of America
    Inventors: G. William Kuhlman, Richard A. Beaumont, Daniel F. Carbaugh, David Anderson, Amiya K. Chakrabarti, Kenneth P. Kinnear
  • Patent number: 5344510
    Abstract: Superalloy articles are made more oxidation resistant by a process which includes heating the article in an environment having a reduced pressure of inert gas and a low partial pressure of oxygen to a temperature at which the sulfur in the article diffuses out. The heat treatment is best carried out at a temperature within the range defined by the incipient melting temperature of the article and about 150.degree. C. below the incipient melting temperature of the article. Alternatively, the heat treatment may be carried out at a temperature above the gamma prime solvus temperature of the article and below the incipient melting temperature of the article. At such temperatures, sulfur readily diffuses out of the article, and a more oxidation resistant component is produced.
    Type: Grant
    Filed: April 14, 1993
    Date of Patent: September 6, 1994
    Assignee: United Technologies Corporation
    Inventors: William P. Allen, Donald R. Parille
  • Patent number: 5330591
    Abstract: A nickel-based alloy useful in the manufacture of a glass fibre centrifuge of which the composition consists essentially of the following elements expressed as percentage by weight:______________________________________ Cr 27.5-29.5% W 6.5-7.8% C 0.69-0.73% Fe 7-10% ______________________________________the remainder substantially being nickel and having in its crystalline structure M.sub.23 C.sub.6 type carbides, M being chromium, at least one equivalent metal, or combination thereof, the M.sub.23 C.sub.6 carbides being substantially secondary.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: July 19, 1994
    Assignee: Isover Saint-Gobain
    Inventor: Stella Vasseur
  • Patent number: 5330710
    Abstract: A nickel-base alloy for a glass-contacting member used in an unenergized state and having a composition comprising by weight 25 to 40% of chromium, 10 to 45% of cobalt, optionally 0.1 to 3.0% of titanium and optionally 0.01 to 0.05% of at least one element selected from among rare earth metals with the balance consisting of nickel and unavoidable impurities.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: July 19, 1994
    Assignee: Doryokuro Kakunenryo Kaihatsu Jigyodan
    Inventors: Toshio Masaki, Noriaki Sasaki, Shin-ichiro Torata, Hiroshi Igarashi, Tetsuya Shimizu, Tomohito Iikubo
  • Patent number: 5306358
    Abstract: An inert gas nitrogen mixture is used as a shielding gas to prevent weld hot cracking in superalloys containing zirconium and/or boron. The gas mixture preferably contains argon and about 2 to 8% by volume nitrogen. Test data show excellent results are obtained when gas tungsten arc welding HAYNES 214 alloy which normally contains boron and zirconium and a minimal content of titanium.
    Type: Grant
    Filed: August 20, 1991
    Date of Patent: April 26, 1994
    Assignee: Haynes International, Inc.
    Inventors: George Y. Lai, Robert B. H. Herchenroeder, Christopher R. Patriarca
  • Patent number: 5167725
    Abstract: Ultrasonic blade coupler comprising a blade element composed of a material selected from aluminum and titanium rendered sharpenable by a surface hardening treatment. The blade coupler exhibits improved acoustical properties with reduced energy consumption.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: December 1, 1992
    Assignee: Ultracision, Inc.
    Inventors: Richard J. Clark, Dale E. Whipple, Alan E. Thomas
  • Patent number: 5141571
    Abstract: A hard surfacing alloy which has a Rockwell C hardness of greater than about 50 and which includes tungsten carbide, chromium carbide and bi-metallic chromium and tungsten carbide crystals which are precipitated in the alloy. Alloys of the present invention in their nominal composition comprise from about 12% to about 20% tungsten; from about 13% to about 30% chromium; an effective amount of carbon for forming carbides with the tungsten and chromium and include effective amounts of fluxes and melting point depressants and the like. The balance of the composition is nickel. The alloys include precipitated carbide crystals of chromium, tungsten and bi-metallic mixtures thereof which are interspersed through the hard surfacing alloy and are metallurgically bonded in the metal matrix of the alloy. The alloys have extremely low porosities and therefore are suitable for glass plunger and other applications where low porosity is essential.
    Type: Grant
    Filed: May 7, 1991
    Date of Patent: August 25, 1992
    Assignee: Wall Colmonoy Corporation
    Inventor: Samuel C. DuBois
  • Patent number: 5135588
    Abstract: A Ni-Fe-Cr soft magnetic alloy essentially consisting of 40-50% Ni, 0.5-5% Cr and balance Fe and satisfying the following conditions:50.ltoreq.(Ni%)+4.times.(Cr%).ltoreq.60;S+O+B.ltoreq.0.008%;S.ltoreq.0.003%;O.ltoreq.0.005%; andB.ltoreq.0.005%;has excellent magnetic characteristics for magnetic core materials.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: August 4, 1992
    Assignee: Nisshin Steel Company Ltd.
    Inventors: Takuji Okiyama, Takuji Hara, Hisao Yasumura, Yutaka Kawai
  • Patent number: 5120614
    Abstract: A nickel-chromium-molybdenum-niobium alloy affords high resistance to aggressive corrosives, including chlorides which cause crevice corrosion and oxidizing acids which promote intergranular corrosion, the alloy also being readily weldable and possessing structural stability at very low as well as elevated temperatures. The alloy consists essentially of, (by weight), 19-23% Cr, 12-15% Mo, 2.25-4% W, 0.65-2% Nb, 2-8% Fe, balance Ni.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: June 9, 1992
    Assignee: Inco Alloys International, Inc.
    Inventors: Edward L. Hibner, Ralph W. Ross, Jr., James R. Crum
  • Patent number: 5021215
    Abstract: A high-strength, heat-resistant steel with improved formability is disclosed, which consists essentially of, by weight %:______________________________________ C: 0.05-0.30%, Si: not greater than 3.0%, Mn: not greater than 10%, Cr: 15-35%, Ni: 15-50%, Mg: 0.001-0.02%, B: 0-0.01%, Zr: 0-0.10%, Ti: 0-1.0%, Nb: 0-2.0%, Al: 0-1.0%, and Mo: 0-3.0%, W: 0-6.0%, (Mo + 1/2 W = 3.0% or less) ______________________________________a balance of Fe and incidental impurities, of the impurities, oxygen and nitrogen being restricted to 50 ppm or less and 200 ppm or less, respectively, and the austenite grain size number being restricted to No. 4 or coarser.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: June 4, 1991
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Yoshiatsu Sawaragi, Nobuyuki Maruyama
  • Patent number: 5019184
    Abstract: A homogenizaton heat treatment for enhancing crevice and pitting corrosion resistance minimizes the formation of Mu phase in nickel-base alloys of high combined percentages of chromium, e.g., 19 to 23% and molybdenum, e.g., 14 to 17%, particularly together with tungsten. Also described is an advantageous alloy composition containing less than 2.5% iron, low carbon and a titanium to carbon ratio greater than 1 which is particularly adapted to be effectively treated by the homogenization heat treatment.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: May 28, 1991
    Assignee: Inco Alloys International, Inc.
    Inventors: James R. Crum, Jon M. Poole, Edward L. Hibner
  • Patent number: 5017249
    Abstract: A nickel-chromium alloy exhibiting enhanced stress rupture strength and grain size stability at elevated temperatures up to about 1260.degree. (2300.degree. F.) due to the affirmative formation of M.sub.6 C carbide within the alloy. The alloy is especially useful for turbine and engine applications.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: May 21, 1991
    Assignee: Inco Alloys International, Inc.
    Inventors: Gaylord D. Smith, Curtis S. Tassen, Pasupathy Ganesan, Jack M. Wheeler
  • Patent number: 4950340
    Abstract: An intermetallic compound type alloy consisting essentially of:Ni or Co or both 45-60%;Si 0.01-1%;Re 0-2%;Hf 0-2%;C 0-2%;one or more elements selected from a group consisting of Zr, Fe, V, Nb, Ta, Cr, Mo, W and Mn 0-5%;one or more elements selected from a group consisting of P, Cu, Zn, Ga, Ge, Cd, In, Sn, Sb, Pb and Bi 0-2%; andthe balance Ti and incidental impurities, andhaving excellent toughness, machinability and wear resistance, the % being atomic %.
    Type: Grant
    Filed: August 5, 1988
    Date of Patent: August 21, 1990
    Assignee: Mitsubishi Kinzoku Kabushiki Kaisha
    Inventors: Saburo Wakita, Junji Hoshi
  • Patent number: 4913752
    Abstract: A nickel-based solder for high-temperatured soldered joints contains up to 15 percent by weight silicon with necessary additives of titanium, zirconium, niobium, arsenic, phosphorus, copper, zinc, indium, germanium, scandium or carbon, and is manufactured in the form or a band or ribbon by rapid quenching from a melt. The resulting rapidly quenched solder ribbon is ductile, and has a crystalline structure.
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: April 3, 1990
    Assignee: Vacuumschmelze GmbH
    Inventor: Joachim Falk
  • Patent number: 4911768
    Abstract: This material is kind of wear-resistant Nickel-base alloy for hard surfacing which can be substituted for Cobalt-base alloy. The new alloy is mainly comprised of C, Si, Cr, W and Cu and is of a low carbon, high chromium, high silicon, high tungsten and copper type Ni-base alloy. The said Ni-base alloy has excellent high temperature adhesive wear resistance and intercrystalline corrosion resistance properties, which are superior to that of the stellite No. 6 alloy Co-base alloy. In addition, the hardness, abrasive wear resistance, scratch resistance, corrosion resistance, elevated temperature oxidation resistance, heat resistance fatigue, crack resistance, operational applicability and other properties are equal to that of Stellite No. 6 Co-base alloy. The alloy of this invention can be used as a substitute for Co-base alloy in hard surfacing of high temperature, high pressure valves and valves for nuclear industry as well as other easily worn spare parts.
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: March 27, 1990
    Assignees: Harbin Research Institute of Welding, Shanghai Valve Works
    Inventors: Zujue Dong, Guo-Liang Huang, Shi He