Metal treatment – Stock – Age or precipitation hardened or strengthened
Reexamination Certificate
2005-06-21
2005-06-21
Wyszomierski, George (Department: 1742)
Metal treatment
Stock
Age or precipitation hardened or strengthened
C148S420000, C420S402000
Reexamination Certificate
active
06908516
ABSTRACT:
A new class of light or reactive elements and monophase α′-matrix magnesium- and aluminum-based alloys with superior engineering properties, for the latter being based on a homogeneous solute distribution or a corrosion-resistant and metallic shiny surface withstanding aqueous and saline environments and resulting from the control during synthesis of atomic structure over microstructure to net shape of the final product, said α′-matrix being retained upon conversion into a cast or wrought form. The manufacture of the materials relies on the control of deposition temperature and in-vacuum consolidation during vapor deposition, on maximized heat transfer or casting pressure during all-liquid processing and on controlled friction and shock power during solid state alloying using a mechanical milling technique. The alloy synthesis is followed by extrusion, rolling, forging, drawing and superplastic forming for which the conditions of mechanical working, thermal exposure and time to transfer corresponding metastable α′-matrix phases and microstructure into product form depend on thermal stability and transformation behavior at higher temperatures of said light alloy as well as on the defects inherent to a specific alloy synthesis employed. Alloying additions to the resulting α′-monophase matrix include 0.1 to 40 wt. % metalloids or light rare earth or early transition or simple or heavy rare earth metals or a combination thereof. The eventually more complex light alloys are designed to retain the low density and to improve damage tolerance of corresponding base metals and may include an artificial aging upon thermomechanical processing with or without solid solution heat and quench and annealing treatment for a controlled volume fraction and size of solid state precipitates to reinforce alloy film, layer or bulk and resulting surface qualities. Novel processes are employed to spur production and productivity for the new materials.
REFERENCES:
patent: 4395440 (1983-07-01), Abe et al.
patent: 4613386 (1986-09-01), Yates et al.
patent: 4997622 (1991-03-01), Regazzoni et al.
patent: 5073207 (1991-12-01), Faure et al.
patent: 5087304 (1992-02-01), Changes et al.
patent: 5221376 (1993-06-01), Masumoto et al.
patent: 5304260 (1994-04-01), Aikawa et al.
patent: 6139651 (2000-10-01), Bronfin et al.
patent: 6248399 (2001-06-01), Hehmann
patent: 6544357 (2003-04-01), Hehmann et al.
patent: 0 414 620 (1991-02-01), None
patent: 2 174 509 (1986-11-01), None
patent: 2 262 539 (1993-06-01), None
patent: 03287731 (1991-12-01), None
patent: 5070880 (1993-03-01), None
patent: 5078775 (1993-03-01), None
patent: WO 93/12262 (1993-06-01), None
Dodd et al., “Atom by Atom Vapour Condensation Applied to the Development of Novel Magnesium Titanium Alloys for Enhanced Corrosion Resistance”, Proc. Int. Conf., Euromat V, Federation of European Materials Societies (fems), Padua, Sep. 25 to 29, 1995, vol. D, E, pp. 141-146.
Miller et al., Assessing the Corrosion Resistance of Non-Equilibrium Magnesium-Yttrium Alloys,Corr. Sci., 51, (12), 1995, pp. 922-931.
Hirota et al., “The Corrosion Behavior of Sputter-Deposited Magnesium-Valve Metal Alloys”,Sci., Rep. Ritu, A-vol. 38, No. 1, Mar. 1993, pp. 53-62.
Shaw et al., “Inhibiting Corrosion in Gr/Al and Gr/Mg Metal Matrix Composites Using Non-Equilibrium Alloying Techniques” Penn State, Apr. 1991-Mar. 1992, pp. 1-90.
Froes et al., “Rapid Solidification of Al, Mg, and Ti”,Journal of Metals, Aug. 1987, pp. 14-20.
Shaw et al., “Inhibiting Corrosion in Gr/Al and Gr/Mg Metal Matrix Composites Using Non Equilibrium Alloying Techniques”,Annual Report AD-A 253 923 Office of Naval Research, Arlington, VA/USA, Jun. 1992, pp. 23-32.
Krishnamurthy et al., “Magnesium-Neodymium Alloys Produced by Rapid Solidification”Processing of Structural Metals by Rapid Solidification: ASM Symposium, Orlando/USA, Oct. 1986, pp. 399-408.
Subramanian et al., “Laser Cladding of Zirconium on Magnesium for Improved Corrosion Properties”,Journal of Materials Science, London/GB, 1991, vol. 26, pp. 951-956.
Hagena et al., “Magnesium Cluster-Beam Deposition on Glass and Si(111)”,Journal of Vacuum Science and Technology: Part A, New York/USA, Mar. 1994, vol. 12, No. 2, pp. 282-298.
Database WPI May 20, 1987, Derwent Publications Ltd., London/GB, AN 87-13405B “Evaporator for Printed Circuit Boards Manufacture . . . ” & SU, A, 440 428 (KIEV POLY), Sep. 15, 2986.
Lee et al., Preparation of Al-Mg Thin Films with Forced Solid Solution by Ion-Plating,Int. Conf. Process Mates. Prop, 1st1993, pp. 1141-1144.
Abrukina, Kinetics of Aging and Structural Transformations in Decomposition of Supersaturated Mg-Sm-Y Solid Solutions Magnievge Slavy Sovren Tekh, [Mater. Vses. Soveshch Issled., Razrab. Primen. Magrievykh Slavov Nas. Khuz.], 2nd1992, pp. 82-86.
Arnell et al., “The Deposition of Highly Supersaturated Metastable Aluminum-Magnesium Alloys by Unbalanced Magnetron Sputtering from . . . ”, 1992, 43 (1-3), pp. 105-109.
Drits et al., Relation Between Mechanical Properties and Composition of Binary Magnesium Alloy,Deposited Doc., 1974, VINITI pp. 103-174, 21 pp.
Drits et al., Effect of Alloying on the Damping Capacity of Magnesium and Its Alloys, Struct., Svoistva Legl. Splavov, 1971, pp. 35-39.
Bray et al., Vapor Deposited Magnesium—Manganese and Magnesium—Chromium Alloys,Magnesium Alloys Theis App., Prop. DGM Conf. 3, 1992, pp. 159-166.
Miller et al., “Improving Corrosion Resistance of Magnesium by Non Equilibrium Alloying with Yttsium”,Corrosion, (Houston(1993), vol. 49, No. 12, pp. 947950.
Klyamkin et al., “Hydriding of Magnesium in Presence of Rare Earth Metal Hydrides”,Izv. Akad. Nauk, SSSR, Met, 1989, vol. 2, pp. 122-127.
Anderson et al., “Microstructural Evaluation of RSR Processed Magnesium Alloys”,ProC. Int. Conf. PM Aerosp. Mater.1988, Meeting Date 1987, 36-1-36-14, An 110 43002.
Hehmann et al., “Extension of Solid Solubility of Yttrium and Rare Earth Metals in Magnesium by Rapid Solidification ”,Process Struct. Met. Rapid Solidif., Proc. Seven Sess. Symp. Enhanced Prop. Struct. Met. Rapid Solidif. (1987), Meeting, 1956, pp. 323-328.
Drits et al., “Mechanical Properties of Binary Magnesium-Samarium Alloys”,Metallored, Term, Obrab, Met., 1985, vol. 7, p. 278.
Ogawa et al., “Hydrogen Absorption and Electronic Structure of Magnesium-based Yttrium and Scandium Dilute Alloys”,J. Less-Common Met.(1982). vol. 88, No. 2, pp. 283-288.
Rokhlin, “Study of the Decomposition of a Supersaturated Solid Solution In Magnesium-Samarium Alloys”,Ftz. Met, Metallored, 1982, vol. 54 No. 2, pp. 315-319.
Drits et al., “Solidification of Magnesium-Yttrium-Zinc-Cadmium Alloys”,Izv. Akad. Nauk, SSSR, Met, 1981, vol. 5, pp. 224-227.
Hehmann Franz
Weidemann Michael
Hehmann Franz
Wyszomierski George
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