Abstract: A structural member comprising at least two aluminum alloy parts displaying different property balances, said at least two parts being welded and wherein one of said parts either is (i) selected from an aluminum alloy different from the other of said at least two parts and/or (ii) is selected from an initial temper different from the other of said at least two parts, and wherein at least one of said at least two parts has been pre-aged prior to being welded, and, wherein said structural member has undergone a post-welding thermal treatment conferring a final temper to each of said at least two parts. The parts are advantageously welded by friction stir welding. Another subject of the invention is a method for manufacturing a structural member.
Abstract: Method of making a composite casting involves providing a reinforcement insert with a ceramic coating, positioning the coated insert in a mold, and casting the molten metallic material into the mold where the metallic material is solidified. The composite casting produced includes the reinforcement insert disposed in a solidified metallic matrix with a ceramic coating between the reinforcement insert and the matrix.
Abstract: The inventors have conducted vigorous studies, and discovered as a result that it is possible to form a silver layer having a high reflectance of about 90 to 99% in a visible light area by setting a grain size of an outermost surface of a silver plated layer within a range of 0.5 ?m or more to 30 ?m or less.
Abstract: A substrate processing chamber component is capable of being exposed to an energized gas in a process chamber. The component has an underlying structure and first and second coating layers, the first coating layer comprising a first material having a first thermal expansion coefficient and a first surface having an average surface roughness of less than about 25 micrometers. The second coating layer is over the first surface of the first coating layer, the second coating layer comprising a second material having a second thermal expansion coefficient that differs by less than 5% from the first thermal expansion coefficient of the first material and a second surface having an average surface roughness of at least about 50 micrometers.
Abstract: Disclosed is a corrosion resistant conductive part, which is made by forming a thin plated gold layer of thickness 100 nm or less on a stainless steel sheet, and for which high corrosion resistance is guaranteed even with a very thin gold layer. The part is characterized in that the maximum value “v” of atomic concentration of gold given by Auger analysis is at least 98% of the total atomic concentrations of all the elements, which is deemed to be 100%, in the thin gold layer ranging from the surface to the interface of the gold layer and the metal substrate, at which the descending curve of gold crosses the ascending curve of the most predominant component of the substrate metal.
Abstract: A simple and low cost method for imparting excellent hydrogen resistance to various types of articles such as a rare earth metal-based permanent magnet. A method for imparting hydrogen resistance to an article of the present invention is characterized by forming a metal coating film by pulse plating on the surface of the article.
Abstract: The present invention provides a bearing material coated slide member manufactured by coating a bearing material on a sliding surface of a slide member, and a method for manufacturing the same, in which the bearing material is composed of an Sn containing alloy powder, and is forced to impact on the sliding surface while being maintained in a solid phase, to thereby form a bearing material coated layer.
Abstract: To provide a steel-aluminum welded material and a spot welding method therefor having high weld strength. The steel-aluminum welded material 3 includes a steel material 1 and an aluminum material 2 having predetermined widths. The area of a nugget 5 of a spot-welded part is determined as a function of the thickness of the aluminum material 2, and the area of a part of the nugget 5 corresponding to a part having a thickness in a range between 0.5 and 10 ?m of an interface reaction layer 6 is defined as a function of the thickness of the aluminum material 2.
Abstract: A coating steel component with a pattern of an iron based matrix with crystalline particles metallurgically bound to the surface of a steel substrate for use as disc cutters or other components with one or more abrading surfaces that can experience significant abrasive wear, high point loads, and large shear stresses during use. The coated component contains a pattern of features in the shape of freckles or stripes that are laser formed and fused to the steel substrate. The features can display an inner core that is harder than the steel substrate but generally softer than the matrix surrounding the core, providing toughness and wear resistance to the features. The features result from processing an amorphous alloy where the resulting matrix can be amorphous, partially devitrified or fully devitrified.
February 6, 2007
Date of Patent:
May 10, 2011
Craig A. Blue, Frank Wong, Louis F. Aprigliano, Peter G. Engleman, William H. Peter, Tibor G Rozgonyi, Levent Ozdemir
Abstract: An aluminum-based welding filler wire is made with an aluminum alloy that contains between 0.1 and 6 wt. % titanium, including one portion in the form of TiB2 particles, TiC particles, or a combination thereof, and another portion in the form of free titanium. The filler wire can be used in welding aluminum-based materials.
Abstract: The invention concerns a cast wear part with its structure reinforced by at least a type metal carbide, and/or metal nitride, and/or boride, and/or metal oxides, and/or intermetallic compounds, referred to below as constituents. The invention is characterized in that the raw materials used as reagents for said constituents have been introduced in a mould (1) before casting in the form of compacted powder inserts or preforms (3) or the form of slurries (4), and the reaction of said powders has been activated in situ by casting a metal, forming a porous conglomerate in situ, and said metal has infiltrated the porous conglomerate, thus forming a reinforced structure leading to inclusion of said constituents in the structure of the metal used for casting, thereby creating a reinforcing structure on the wear part (2).
Abstract: A bonding structure and method of manufacturing the same are provided. The bonding structure of a substrate and a component include an electrode formed of metal powder and a resin component on the substrate. A low melting point solder that bonds the component to the electrode. The metal powder contains at least spherical metal powder and flake metal powder. The low melting point solder is infiltrated from the surface of the electrode into the electrode.
Abstract: A process for producing sheets of ?-TiAl includes the steps of forming a melt of a ?-TiAl alloy; casting the ?-TiAl alloy to form an as-cast ?-TiAl alloy; encapsulating the as-cast ?-TiAl alloy to form an as-cast ?-TiAl alloy preform; and rolling the as-cast ?-TiAl alloy preform to form a sheet comprising ?-TiAl.
Abstract: A composite material having a high thermal conductivity and a small thermal expansion coefficient, which is obtained by impregnating a porous graphitized extrudate with a metal; the composite material having such anisotropy that the thermal conductivity and the thermal expansion coefficient are 250 W/mK a more and less than 4×10?6/K, respectively, in an extrusion direction; and that the thermal conductivity and the thermal expansion coefficient are 150 W/mK or more and 10×10?6/K or less, respectively, in a direction perpendicular to the extrusion direction.
Abstract: The present invention provides methods for manufacturing an article having a wetting-resistant surface. The method includes providing a substrate. The method further includes disposing a coating mixture on a surface of the substrate, wherein the coating mixture comprises a braze material and a texture-providing material. The method further includes heating the braze material to bond the texture-providing material to the surface of the substrate to form the article having the wetting-resistant surface.
December 14, 2006
Date of Patent:
April 5, 2011
General Electric Company
Tao Deng, Pazhayannur Ramanathan Subramanian, Ming Feng Hsu, Yuk-Chiu Lau, Margaret L. Blohm, Wayne Charles Hasz, Nitin Bhate, Kripa Kiran Varanasi, Gregory Allen O'Neil
Abstract: Fine-gained (average grain size 1 nm to 1,000 nm) metallic coatings optionally containing solid particulates dispersed therein are disclosed. The fine-grained metallic materials are significantly harder and stronger than conventional coatings of the same chemical composition due to Hall-Fetch strengthening and have low linear coefficients of thermal expansion (CTEs). The invention provides means for matching the CTE of the fine-grained metallic coating to the one of the substrate by adjusting the composition of the alloy and/or by varying the chemistry and volume fraction of particulates embedded in the coating. The fine-grained metallic coatings are particularly suited for strong and lightweight articles, precision molds, sporting goods, automotive parts and components exposed to thermal cycling. The low CTEs and the ability to match the CTEs of the fine-grained metallic coatings with the CTEs of the substrate minimize dimensional changes during thermal cycling and prevent premature failure.
September 24, 2010
Date of Patent:
March 22, 2011
Integran Technologies, Inc.
Gino Palumbo, Jonathan McCrea, Klaus Tomantschger, Iain Brooks, Daehyun Jeong, Dave Limoges, Konstantinos Panagiotopoulos, Uwe Erb
Abstract: A metallic glass laminate of the present invention is characterized in that a metallic glass layer of amorphous phase is formed on the substrate surface, and there is no continuous pore (pinhole) through the metallic glass layer. The metallic glass laminate is preferably obtained by solidification and lamination of at least part of the metallic glass powder in the molten state or in the supercooled liquid state on the substrate surface. Because of the dense metallic glass layer of homogenous amorphous phase, the functionalities of metallic glass such as corrosion resistance and wear resistance can be satisfactorily provided. A thick and a large-area metallic glass layer can be formed. The metallic glass layer can also be formed into various shapes within the supercooled liquid temperature range. In addition, a metallic glass bulk can be obtained by removing the substrate.
Abstract: A steel/aluminum welded structure comprises a hot-dip Al-coated steel sheet 1 spot welded with an aluminum or aluminum alloy sheet 2. The steel sheet 1 is coated with a coating layer 4 containing, by mass, 3-12% of Si and 0.5-5% of Fe. An area ratio of an Al—Fe binary alloy layer, formed at the joint boundary, is controlled to 90% or less. An unalloyed region 9 exists between an Al—Fe—Si ternary alloy layer 6 at an interface of a steel substrate 5 with the coating layer 4 interface and the Al—Fe binary alloy layer at the joint boundary. A steel substrate 5 preferably contains 0.002-0.020% of N for formation of a N-enriched surface layer in contact with the coating layer 4. The N-enriched layer impedes propagation of the brittle Al—Fe binary alloy layer to the whole of the joint boundary and raises joint strength of the steel/aluminum welded structure.
Abstract: A titanium alloy composite material including dispersed carbon fibers coated with a layer containing an element which forms a carbide in reaction with carbon, and the carbide formed thereby, in crystal grains of the titanium alloy. The element which forms a carbide in reaction with carbon is preferably at least one of silicon (Si), chromium (Cr), titanium (Ti), vanadium (V), tantalum (Ta), molybdenum (Mo), zirconium (Zr), boron (B), and calcium (Ca). The carbon fibers are preferably carbon nanotubes, vapor-grown carbon fibers, or a mixture thereof. The titanium alloy composite material has excellent mechanical strength, such as tensile strength, Young's modulus, toughness, and hardness.