| 摘要 |
In accordance with one aspect of the present invention is the metamorphic processing of a beryllium-copper alloy. The alloy is (i) thermodynamically treated for greater than about 10 hours at a temperature generally within a range of 900.degree. to 1500.degree.F, (ii) warm worked at greater than about 30% strain at a strain rate ~ greater than or equal to about (2.210 .times. 7)/exp[(2.873 .times. 10 4)/(T + 459.4.degree.)], where T is in .degree.F, a t the temperature, (iii) annealed at a temperature between 1375.degree. and 1500.degree.F for about 15 minutes to about 3 hours, (iv) water quenched, and (v) thermal hardened at a temperature generally within a range of about 480.degree. and 660.degree.F. Grain size is reduced with concomitant improvements in ultimate strength, toughness, total elongation, % reduction in area and ultrasonic inspectability.
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