| 摘要 |
A titanium base alloy with improved superplastic, hot workability, cold workability, and mechanical properties is provided. The alloy has about 4% Al and 2.5% V, with below 0.15% O, with 2% Fe and 2% Mo, 0.85 DIFFERENCE 3.15 wt. % Mo, and at least one element from the group of Fe, Ni, Co, and Cr as beta stabilizing elements, and as contributing elements to the lowering of beta transus, finally to the improvement of the superplastic properties, and hot and cold workability, with the grain size of below 5 mu m. A method of making thereof is provided with the reheating temperature between beta transus minus 250 DEG C. and beta transus. A method of superplastic forming thereof is provided with the heat treating temperature between beta transus minus 250 DEG C. and beta transus.
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