Alloys or metallic compositions – Tungsten base
Patent
1988-04-11
1990-03-13
Roy, Upendra
Alloys or metallic compositions
Tungsten base
148403, 420431, 420432, C22C 2704
Patent
active
049081829
ABSTRACT:
Tungsten-rich alloys of formula W.sub.100-P M.sub.X RE.sub.Y ME.sub.Z wherein W is tungsten, M is one or more elements selected from the group consisting of transition elements, RE is an element selected from the group consisting of rare earth and actinide elements, ME is silicon, boron, germanium or aluminum, X is 0 to 25 weight %, Y is 0 to 2 weight %, Z is 0.1 to 3 weight % and P=X+Y+Z where P.ltoreq.26 weight % are disclosed. The alloys possess high strength and ductility. A method for preparing the alloys by rapid solidification processing is also disclosed.
REFERENCES:
patent: Re29547 (1978-02-01), Severns, Jr. et al.
patent: 1788243 (1906-01-01), Laise
patent: 1807581 (1931-01-01), Bates
patent: 2180826 (1939-11-01), Hensel et al.
patent: 2997225 (1961-03-01), Wlodek
patent: 3150971 (1964-09-01), Weissert et al.
patent: 3351438 (1967-11-01), Millner et al.
patent: 3356542 (1967-12-01), Smith
patent: 3563873 (1971-02-01), Beyer
patent: 3661536 (1972-05-01), Shimizu et al.
patent: 3803238 (1975-09-01), Grinder et al.
patent: 3988118 (1976-11-01), Grierson et al.
patent: 4062677 (1977-12-01), Perfect
patent: 4212343 (1980-07-01), Narashimhan
patent: 4221257 (1980-09-01), Narashimhan
patent: 4743513 (1988-05-01), Scruggs
S. H. Whang, J. Metals, 36, 34 (1984).
C. S. Chi and S. H. Whang, Mat. Res. Soc. Symp. Proc.
S. M. L. Sastry et al., J. Metals, 35, 21 (1983).
S. H. Whang and B. C. Gressin, Proc. Third Conf. Rapid Solidification Processing, R. Mehrabian, editor, NBS, 439-442.
S. H. Whang, J. Mat. Sci., 21(7), 2224 (1986).
J. Hubert et al., "Manufacture of Metallic Wires and Ribbons by the Melt Spin and Melt Drag Processes", Z. Metallk, 64, 835 (1973).
P. Pietrokowsky, "Novel Mechanical Device for Producing Rapidly Cooled Metals and Alloys of Uniform Thickness," Rev. Sci. Instrum., 34, 445-446 (1963).
R. W. Cahn, "Novel Splat Quenching Techniques and Methods for Assessing Their Performance", Mater. Sci. Eng., 23, 84-86 (1976).
M. Ohring and A. Haldipur, "A Versatile Arc Melting Apparatus for Quenching Molten Metals and Ceramics", Rev. Sci. Instrum., 42, 530-531 (1971).
Polytechnic University
Roy Upendra
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