Patents Examined by Arthur J. Steiner
  • Patent number: 4231795
    Abstract: This is a nickel-base superalloy with excellent weldability and high strength. Its composition consists essentially of, by weight percent, 10-20 iron, 57-63 nickel, 7-18 chromium, 4-6 molybdenum, 1-2 niobium, 0.2-0.8 silicon, 0.01-0.05 zirconium, 1.0-2.5 titanium, 1.0-2.5 aluminum, 0.02-0.06 carbon, and 0.002-0.015 boron. The weldability and strength of this alloy give it a variety of applications. The long-time structural stability of this alloy together with its low swelling under nuclear radiation conditions, make it especially suitable for use as a duct material and controlling element cladding for sodium-cooled nuclear reactors.
    Type: Grant
    Filed: June 22, 1978
    Date of Patent: November 4, 1980
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Robert C. Gibson, Michael K. Korenko
  • Patent number: 4225363
    Abstract: A method for heat treating an age-hardenable iron-nickel-chromium alloy to obtain a morphology of the gamma-double prime phase enveloping the gamma-prime phase, the alloy consisting essentially of about 40 to 50% nickel, 7.5 to 14% chromium, 1.5 to 4% niobium, 0.3 to 0.75% silicon, 1 to 3% titanium, 0.1 to 0.5% aluminum, 0.02 to 1% carbon, 0.002 to 0.0015% boron and the remain substantially all iron. To obtain optimal results, the alloy is cold-worked 20 to 60% followed by heating at 1050.degree. C. for 1/2 hour with an air-cool plus heating at 800.degree. C. for 2 hours with a furnace cool to 625.degree. C. The alloy is then held at 625.degree. C. for 12 hours, followed by an air-cool.
    Type: Grant
    Filed: June 22, 1978
    Date of Patent: September 30, 1980
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Michael K. Korenko
  • Patent number: 4225364
    Abstract: A solid solution strengthened Ni-Cr-Fe alloy capable of retaining its strength at high temperatures and consisting essentially of 42 to 48% nickel, 11 to 13% chromium, 2.6 to 3.4% niobium, 0.2 to 1.2% silicon, 0.5 to 1.5% vanadium, 2.6 to 3.4% molybdenum, 0.1 to 0.3% aluminum, 0.1 to 0.3% titanium, 0.02 to 0.05% carbon, 0.002 to 0.015% boron, up to 0.06 zirconium, and the balance iron. After solution annealing at 1038.degree. C. for one hour, the alloy, when heated to a temperature of 650.degree. C., has a 2% yield strength of 307 MPa, an ultimate tensile strength of 513 MPa and a rupture strength of as high as 400 MPa after 100 hours.
    Type: Grant
    Filed: June 22, 1978
    Date of Patent: September 30, 1980
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Robert C. Gibson, Michael K. Korenko
  • Patent number: 4214950
    Abstract: The steel according to the invention consists of 0.12-0.20% by weight of carbon, 0.15-0.37% by weight of silicon, 0.3-0.8% by weight of manganese, 1.6-2.7% by weight of chromium, 0.8-2.0% by weight of nickel, 0.5-1.0% by weight of molybdenum, 0.05-0.15% by weight of vanadium, 0.002-0.08% by weight of cerium, 0.01-0.10% by weight of copper, 0.0005-0.009% by weight of antimony, 0.0005-0.009% by weight of tin, 0.001-0.02% by weight of sulphur, 0.002-0.02% by weight of phosphorus, 96.246-92.862% by weight of iron.The steel exhibits improved resistance against neutron radiation. At 300.degree. C. and neutron fluence of 1.10.sup.20 neutr./cm.sup.2, the transition embrittlement temperature increases by no more than 50.degree. C. The steel is designed for application in structural members having a wall thickness of up to 650 mm and has ultimate strength .sigma..sub.B at 350.degree. C. of at least 55 kgf/mm.sup.2. The steel does not require immediate temper after welding.
    Type: Grant
    Filed: November 2, 1977
    Date of Patent: July 29, 1980
    Inventors: Jury F. Balandin, Vladimir I. Badanin, Igor V. Gorynin, Lev Y. Gluskin, Jury I. Zvezdin, Vladimir A. Nikolaev, Anatoly M. Parshin, Nikolai N. Zorev, Anatoly A. Astafiev, Vladimir S. Dub, Oleg M. Vishkarev, Sergei I. Markov, Jury V. Sobolev, Valentin I. Kozlov
  • Patent number: 4212668
    Abstract: A steel containing in percent by weight:______________________________________ carbon from 0.13 to 0.8 silicon from 0.15 to 0.3 manganese from 0.3 to 0.6 chromium from 1.6 to 2.5 nickel from 1.0 to 2.0 molybdenum from 0.5 to 0.7 vanadium from 0.01 to 0.12 copper from 0.01 to 0.05 antimony from 0.0005 to 0.009 tin from 0.0005 to 0.009 phosphorus from 0.001 to 0.005 arsenic from 0.0005 to 0.002 iron, the balance, ______________________________________the total amount of phosphorus and arsenic contained in said composition is expressed by the following relationship:P+5As.ltoreq.1.10.sup.-2 wt.%.
    Type: Grant
    Filed: July 24, 1978
    Date of Patent: July 15, 1980
    Inventors: Nikolai N. Zorev, Vladimir A. Tsykanov, Igor V. Gorynin, Lev V. Tupitsyn, Georgy P. Fedortsov-Lutikov, Anatoly A. Astafiev, Vladimir S. Dub, Oleg M. Vishkarev, Alexandr S. Loboda, Iraida I. Kalugina, Nikolai N. Kobelev, Valentin V. Krasinsky, Valery A. Litvak, Evgeny F. Davydov, Valentin K. Shamardin, Jury F. Balandin, Vladimir A. Nikolaev, Jury V. Sobolev, Anatoly M. Parshin, Vladimir I. Badanin
  • Patent number: 4207098
    Abstract: Nickel-base superalloys suitable for the production of cast parts for use at elevated temperatures in corrosive atmospheres contain in weight percent about 14% to 22% chromium, 5% to 25% cobalt, 1% to 5% tungsten, 0.5% to 3% tantalum, 2% to 5% titanium, 1% to 4.5% aluminum, the sum of the titanium plus aluminium being 4.5 to 9% up to 2% niobium, 0.31% to 1.2% boron, up to 3.5% molybdenum, up to 0.5% zirconium, up to 0.2% in total of yttrium or lanthanum or both, up to 0.1% carbon, the balance apart from impurities being nickel. Advantageously the alloys are controlled such that%Ti+%Al+%Nb+0.5(%Ta)+0.2(%Cr)=11.2 to 12.4.
    Type: Grant
    Filed: January 9, 1978
    Date of Patent: June 10, 1980
    Assignee: The International Nickel Co., Inc.
    Inventor: Stuart W. Shaw
  • Patent number: 4204862
    Abstract: An austenitic heat-resistant steel which forms an oxide film mainly composed of Al.sub.2 O.sub.3 in a high-temperature oxidizing atmosphere, consisting essentially of not more than 0.2% of C, not more than 1.0% of Si, not more than 2.0% of Mn, 12 to 37% of Ni, 9 to 25% of Cr, more than 4.5 but not more than 6% of Al, and at least one member selected from the group consisting of Ti, Nb and Zr in a total amount of not more than 0.8%, with the balance being Fe; the .delta.-ferrite value of this steel, calculated from the formula set forth below, is from 0 to 7.9; this steel is removed of an internal oxide layer which has been formed just below the steel surface during hot working. ##EQU1## where Wi and Mi represent, respectively, the percent by weight and the atomic weight of Ti, Nb and Zr, and when the term ##EQU2## is negative this term is regarded as zero. This steel composition may contain one or more rare earth elements such as Y, Ce and La in a total amount of not more than 0.08%.
    Type: Grant
    Filed: April 5, 1978
    Date of Patent: May 27, 1980
    Assignee: Nippon Steel Corporation
    Inventors: Satoshi Kado, Taketomo Yamazaki, Tetsu Sakamoto, Mikio Yamanaka, Kotaro Yoshida
  • Patent number: 4202691
    Abstract: A flame spray powder mix is provided for producing coatings on metal substrates, such as substrates of steel, cast iron, non-ferrous metals, among other substrates, the powder mix comprising agglomerates of a metallo-thermic heat generating composition (i.e., a thermit composition, such as an alumino-thermic composition) mixed with at least one coating material, such as metal and/or non-metal coating materials.
    Type: Grant
    Filed: November 21, 1978
    Date of Patent: May 13, 1980
    Assignee: Eutectic Corporation
    Inventor: George Yurasko, Jr.
  • Patent number: 4201574
    Abstract: Herein disclosed is a low carbon austenitic steel having an improved resistance to stress corrosion cracking. The austenitic steel consists essentially of, by weight; less than 0.029% of carbon; 1.5 to 4.0% of silicon; 0.1 to 3.0% of manganese; 23 to 45% of nickel; 20 to 35% of chromium; 0.5 to 4.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: May 6, 1980
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Masamichi Kowaka, Hisao Fujikawa
  • Patent number: 4200457
    Abstract: A ferrous base alloy is disclosed, which is especially adapted for use as a hard facing or coating for poppet valves and the like. The alloy is characterized by the fact that it has an electron vacancy value or Nv number within the range of from about 1.75 to about 2.60.
    Type: Grant
    Filed: January 22, 1979
    Date of Patent: April 29, 1980
    Inventor: Arthur T. Cape
  • Patent number: 4196261
    Abstract: Bimetal strip the high-expansion element of which is an alloy which, in weight percent (w/o), consists essentially of up to about 0.50 w/o carbon, about 15-50 w/o manganese, up to about 2 w/o silicon, up to about 12 w/o chromium, about 10-35 w/o nickel, up to about 10 w/o cobalt and the balance iron except for incidental amounts of other elements which may include up to about 0.04 w/o phosphorus, up to about 0.04 w/o sulfur as well as other elements which do not significantly detract from the desired properties or result in the formation of ferrite or otherwise render the desired room temperature austenitic structure of the alloy unstable so as to significantly reduce the coefficient of thermal expansion.
    Type: Grant
    Filed: October 19, 1978
    Date of Patent: April 1, 1980
    Assignee: Carpenter Technology Corporation
    Inventor: Earl L. Frantz
  • Patent number: 4194932
    Abstract: Fe/Cr/Co alloys of this invention which are provided with both a good workability and maximum energy product of 2.0 MGOe or more, consist of 17 to 45% by weight of chromium, 3 to 14.9% by weight of cobalt and the remainder being essentially of iron, which also attribute to the method of producing improved Fe/Cr/Co permanent alloy products usable with good efficiency on an industrial scale and make the best possible use of the advantageous characteristics particular to the component compositions of the alloys. This method contains the aging in a magnetic field and preferably comprises at least the step of aging in a magnetic field the alloy material in a predetermined temperature range and the secondary aging treatment step of cooling continuously and gradually the alloy material through a predetermined temperature range.
    Type: Grant
    Filed: February 7, 1978
    Date of Patent: March 25, 1980
    Assignee: Hitachi Metals
    Inventor: Masao Iwata
  • Patent number: 4194906
    Abstract: A low alloy white cast iron has been developed for wear resistance applications. The alloy consists essentially of about 2 to 4% carbon, 0.3 to 1.5% silicon, 0.5 to 1.5% manganese, 0.5 to 1.5% copper and 0.25 to 1% molybdenum, the remainder being substantially iron except for incidental impurities commonly found in cast iron. The preferred alloy composition is 2.5 to 3% carbon, 0.6 to 0.9% silicon, about 1% manganese, about 1% copper and about 0.5% molybdenum, the rest being substantially iron. The process for manufacturing the above wear resistant alloy consists in melting an alloy having the composition mentioned above, casting such alloy into moulds to produce a desired product such as grinding balls or slugs, shaking the product out of the moulds at a temperature of 750.degree. C. or higher, preferably about 900.degree. C. and cooling the product at a rate of 2.degree. to 15.degree. C./sec., preferably 5.degree. to 10.degree. C./sec.
    Type: Grant
    Filed: May 16, 1978
    Date of Patent: March 25, 1980
    Assignee: Noranda Mines Limited
    Inventors: Tibor Krantz, Jean C. Farge
  • Patent number: 4191565
    Abstract: A flame spray powder mix is provided for producing metal coatings on metal substrates, such as ferrous metal substrates, e.g. steel, cast iron, among other metal substrates, the powder mix comprising agglomerates of at least one metal silicide, e.g. titanium disilicide, homogeneously mixed with a coating metal powder, such as nickel powder. The mix may additionally contain agglomerates of silicon powder with the coating metal powder making up the major portion of the powder mix.
    Type: Grant
    Filed: June 15, 1978
    Date of Patent: March 4, 1980
    Assignee: Eutectic Corporation
    Inventor: Mahesh S. Patel
  • Patent number: 4190437
    Abstract: A castable nickel-iron base alloy suitable for high temperature service and characterized by low thermal expansion and freedom from notch sensitivity and deleterious microshrinkage in castings. The alloy consists essentially of at least 16% nickel, at least 10% cobalt, up to 5% columbium, up to 3% tantalum, up to 2.5% titanium, up to 2% aluminum, 0.06% to 0.25% boron, up to 0.1% carbon, and the balance iron.
    Type: Grant
    Filed: January 26, 1979
    Date of Patent: February 26, 1980
    Assignee: Special Metals Corporation
    Inventors: William J. Boesch, Gernant E. Maurer
  • Patent number: 4190443
    Abstract: A flame spray powder mix is provided for producing metal coatings on metal substrates, such as ferrous metal substrates, e.g., steel, cast iron, among other metal substrates, the powder mix comprising agglomerates of silicon and at least one metal disilicide, e.g., titanium disilicide, homogeneously mixed or blended with a coating metal powder, such as nickel powder.
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: February 26, 1980
    Assignee: Eutectic Corporation
    Inventor: Mahesh S. Patel
  • Patent number: 4190435
    Abstract: A process for the production of ferro alloys containing manganese, chromium, molybdenum, and small amounts of carbon is provided. To a converter having a previous product melt and a slag rich in oxides of chromium or manganese is added a reducing agent having an excess of silicon or aluminum. Fluid is injected into the melt to create intensive agitation of the melt, slag and reducing agent, whereby the oxides in the slag are reduced. Lime is added to fix the resulting silicoc acid or aluminum oxide, and the slag with reduced chromium or manganese content is removed from the converter. Injection into the melt of a pulverulent oxide concentrate of chromium or manganese is continued, with additional lime, until the excess of silicon or aluminum in the melt, supplied by the reducing agent, reduces the injected oxide concentrate and the chromium and manganese are oxidized and go into the slag. The resulting product is partially tapped from the converter and the process is repeated.
    Type: Grant
    Filed: October 25, 1978
    Date of Patent: February 26, 1980
    Assignee: Uddeholms Aktiebolag
    Inventors: M. K. Olof Johnsson, Rune H. Lindstrom, Per-Ake Lundstrom, Lars-Gunnar Norberg
  • Patent number: 4190493
    Abstract: A protective layer of tungsten or molybdenum is tightly adhered via an intermediate layer of pure nickel to a substratum of nickel-base alloy containing a carbide-former. The protected substratum is used in the structural components for a helium cooling circuit of a high temperature nuclear reactor. The protective layer is of a thickness of from 0.5 to 0.2 millimeters while the intermediate layer is of a thickness of 0.01 to 0.05 millimeters.
    Type: Grant
    Filed: December 20, 1977
    Date of Patent: February 26, 1980
    Assignee: Sulzer Brothers Limited
    Inventor: Kim S. Yee
  • Patent number: 4190438
    Abstract: An amorphous magnetic alloy consists of 2 to 20 at % (atomic percent) of ruthenium atoms; 10 to 30 at % of atoms of at least one amorphous forming element selected from the group consisting of phosphorus, carbon, silicon, boron and germanium; and iron atoms as the predominant component of the balance.
    Type: Grant
    Filed: September 7, 1978
    Date of Patent: February 26, 1980
    Assignee: Sony Corporation
    Inventors: Koichi Aso, Satoru Uedaira, Shigeyasu Ito, Hidemasa Tamura, Yoshimi Makino
  • Patent number: 4190442
    Abstract: A flame spray powder mix or blend is provided for producing metal coatings on metal substrates, such as ferrous metal substrates, e.g., steel, cast iron, among other metal substrates, the powder mix comprising agglomerates of at least one oxidizable metal, e.g., aluminum, homogeneously mixed or blended with a coating metal powder, such as nickel powder. The coating produced is characterized by a strong bond and also being substantially low in dispersed oxides.
    Type: Grant
    Filed: June 15, 1978
    Date of Patent: February 26, 1980
    Assignee: Eutectic Corporation
    Inventor: Mahesh S. Patel