Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1986-06-18
1988-02-23
Dean, R.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
148437, 419 23, 419 62, 419 66, 419 67, 420528, 420551, 420552, C22C 2120
Patent
active
047268433
ABSTRACT:
Aluminum alloy, suitable for rapid quenching from a melt supersaturated with alloy components, which contains 2 to 5.5% by weight of Cr and 2 to 5.5% by weight of V, the remainder being Al, and may contain further added amounts of Mo, Zr, Ti or Fe, individually or in combination, up to a total content of not more than 1% by weight, the total content of all alloy elements being no more than 10% by weight. The simultaneous occurrence of the phases Al.sub.13 Cr.sub.2 and Al.sub.10 V in silid solution and as hardness-imparting dispersoids having a particle diameter of not more than 0.1 .mu.m results in good high-temperature strength and thermal stability coupled with good ductility and toughness of the material. The comparatively Low Vickers hardness of, on average, only about 130 (HV) for the rapidly solidified alloys initially obtained make the powders readily processable. After the heat treatment, the Vickers hardness of the workpiece reaches values up to about 200 (HV).
REFERENCES:
patent: 4347376 (1982-08-01), Ray et al.
Chemical Abstracts, Band 102, Nr. 6, 11 Feb. 1985, Columbus, Ohio (U.S.), Park et al.; "The Aging Phenomena in Rapidly Quenched Aluminum-Chromium-X Alloy".
Chemical Abstracts, Band 101, Nr. 6, 6 Aug. 1984, Columbus, Ohio (U.S.).
BBC Brown Boveri & Company Limited
Dean R.
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