首页|Superplastic Forming Properties of TIMETAL~?54M (Ti-5%Al-4%V-0.6%Mo-0.4%Fe) Sheets
Superplastic Forming Properties of TIMETAL~?54M (Ti-5%Al-4%V-0.6%Mo-0.4%Fe) Sheets
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NETL
NSTL
Trans Tech Publications Ltd
Superplastic forming (SPF) properties of TIMETAL~?54M (Ti-5Al-4V-0.6Mo-0.4Fe, or Ti-54M) sheet were investigated. A total elongation of Ti-54M exceeds 500% at temperatures between 750℃ and 850℃ at a strain rate of 10~(-3)/S. Values of strain rate sensitivity (m-value) measured by jump strain rate tests are 0.45～0.6 in a temperature range of 730℃ to 900℃ at a strain arte of 5 × 10~(-4)/S or 1 × 10~(-4)/S. Flow stress of the alloy is 20 ～ 40% lower than that of Ti-6Al-4V (Ti-64) mill annealed sheet. The observation of microstructure after the tests revealed the indication of grain boundary sliding in a wide range of temperatures and strain rates.
NETL
NSTL
Trans Tech Publications Ltd
