C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/87
C22C 1/02 (2006.01) B22F 9/00 (2006.01) C22C 1/04 (2006.01) C22C 21/00 (2006.01) C22C 45/08 (2006.01)
Patent
CA 1282267
Abstract Aluminium alloy, suitable for rapid quenching from a melt supersaturated with alloy components, which con- tains 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 combina- tion, 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 Al13Cr2 and Al10V in silid solution and as hardness- imparting dispersoids having a particle diameter of not more than 0.1 µm 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).
512232
Couper Malcolm J.
Limited Bbc Brown Boveri & Company
Swabey Ogilvy Renault
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