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《Special Casting & Nonferrous Alloys》 2018-09
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Hot Deformation Behavior and Constitutive Modeling of Ti-10.2Mo-4.9Zr-5.5Sn Alloy

Wan Peng;Wang Kelu;Lu Shiqiang;Chen Xuhuai;Zhou Feng;School of Aeronautical Manufacturing Engineering,Nanchang Hangkong University;  
The isothermal compression tests of Ti-10.2 Mo-4.9 Zr-5.5 Sn alloy were tested to understand the hot deformation behavior in range of 670~820 ℃ and strain rate range of 0.001~10 s-1 on a Gleeble-3500 thermo mechanical simulator,and hot deformation activation energy was calculated.The results show that the flow stress is more sensitive to deformation temperature and strain rate,and the flow stress is decreased with the increase of deformation temperature and decrease of strain rate.The deformation activation energy of the alloy is the higher than the self diffusion activation energy of pureαtitanium and pureβtitanium alloy.The constitutive equation of Ti-10.2 Mo-4.9 Zr-5.5 Sn alloy is built up based on multiple linear regression method,where the correlation coefficient and the average relative error are 0.987 5 and 4.99% after an error calculation,showing a high precision.
【Fund】: 国家自然科学基金资助项目(51464035)
【CateGory Index】: TG146.23
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