Process for producing an age-hardening copper titanium alloy str

Details Process for producing an age-hardening copper titanium alloy str Process for producing an age-hardening copper titanium alloy str

1984-11-13

1986-01-28

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

148 127C, 420492, C22F 108

Patent

active

045669155

ABSTRACT:
A process for producing an age-hardened copper titanium alloy strip includes preparing a copper titanium alloy melt, casting it, hot-working the cast alloy, cold-working the hot-worked alloy as required, annealing the hot-worked or cold-worked alloy, solution heat-treating the annealed alloy, and then the solution heat-treated alloy is age-hardened. The alloy is annealed at a temperature of 500.degree. C. to 700.degree. C. for one to 20 hours. Its solution heat treatment is terminated before or approximately as soon as a precipitated secondary phase has formed a complete solid solution in a master phase, so that the master phase may have an average crystal grain size not exceeding 25 microns. It is preferably terminated within three minutes. The alloy has a titanium content of 2 to 6% by weight.

REFERENCES:
patent: 2943960 (1960-07-01), Saarivirta
patent: 4073667 (1978-02-01), Caron et al.
patent: 4425168 (1984-01-01), Goldstein et al.
Kato et al., "Hardening by Spinodal Modulated Structure", Acta Metallurgica, vol. 28, 1980, pp. 285-290.

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