Process for improving the static and dynamic mechanical properties of (.alpha.+.beta.)-titanium alloys
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United States of America Patent
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Jun 27, 1989
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N/A
app pub date -
Jun 30, 1987
filing date -
Jul 3, 1986
priority date (Note) -
Expired
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Abstract
The process relates to the improvement of the static and dynamic mechanicalroperties of (.alpha.+.beta.) titanium alloys by thermomechanical treatment, wherein the alloys produced by melting and forging and/or hot isostatic pressing of powders are deformed by more than 60% with simultaneous strain-hardening at a temperature just above the recrystallization temperature of the relevant alloys in one or more steps, with structure stress-relief heatings being performed without complete recrystallization between these individual steps, the shaped part is then tempered for 2 to 4 min near the transus of the alloy, quenched and then aged at temperatures in the range of from 400.degree. to 600.degree. C.
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