Modified brass alloys with improved stress relaxation resistance

Details Modified brass alloys with improved stress relaxation resistance Modified brass alloys with improved stress relaxation resistance

1979-11-05

1980-11-11

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75162, 148 2, 148 115C, C22C 904, C22F 108

Patent

active

042330696

ABSTRACT:
An alloy system which exhibits improved resistance to stress relaxation at elevated temperatures utilizes additions of magnesium plus aluminum to a copper-zinc base to attain the stress relaxation performance. Processing of this alloy system should be performed so as to maintain at least 90% by weight alpha-phase within the alloy.

REFERENCES:
patent: 1938172 (1933-12-01), Crampton
patent: 2935400 (1960-03-01), Zeider et al.
patent: 3253910 (1966-05-01), Burghoff et al.
patent: 3982933 (1976-09-01), Rudolph et al.
Genders et al., The Casting of Brass Ingots, London: British Non-Ferrous Metals Research Association, 1943, p. 38.
Burke et al., Grain Control in Industrial Metallurgy, presented to members of ASM during 30th National Metal Congress and Exposition, Philadelphia, Pa., Oct. 23-29, 1948, pp. 158-208.

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