Processing for titanium alloys

Details Processing for titanium alloys Processing for titanium alloys

C - Chemistry, Metallurgy

22

F

75/53, 148/35.7

C22F 1/18 (2006.01)

Patent

CA 1229249

-13- Improved Processing for Titanium Alloys Abstract Process for improving the crack growth behavior of titanium alloys containing substantial beta stabilizers and at least 3% molybdenum, such as Ti-6-2-4-6. The process includes the steps of forging above the beta transus temperature, cooling at a controlled rate through the beta transus temperature, heating to a temperature between 50-150°F below the beta transus temperature, cooling the alloy at a rate in excess of that produced by air cooling, and aging the material between about 900°F and 1100°F. The resultant material has sub- stantially improved crack growth behavior when contrasted with material processed according to the prior art.

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