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

75160, 75157, 75162, 148 115C, 148 2, C22C 904, C22F 108

Patent

active

042330688

ABSTRACT:
An alloy system which exhibits improved resistance to stress relaxation at elevated temperatures utilizes additions of tin or silicon, or mixtures of each of these elements, along with magnesium or magnesium plus aluminum to a copper-zinc base to attain the stress relaxation performance. The composition and processing of this alloy system maintains at least 90% by weight alpha-phase within the alloy.

REFERENCES:
patent: B411471 (1976-02-01), Rudolph et al.
patent: 1040027 (1912-10-01), Schmid
patent: 1938172 (1933-12-01), Crampton
patent: 2935400 (1960-03-01), Zeider et al.
patent: 3158470 (1964-11-01), Burghoff et al.
Burke et al., Grain Control in Industrial Metallurgy, ASM, 30th National Metal Congress and Exposition, Philadelphia, Pa., Oct. 23-29, 1948, pp. 158-208.
Genders et al., The Casting of Brass Ingots, London, British Non-Ferrous Metals Research Association, 1943, p. 38.

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