FE-based coupling simulation of Ti60 alloy in isothermal upsetting process

来源期刊：中国有色金属学报(英文版)2010年第5期

论文作者：罗皎 李淼泉

文章页码：849 - 856

Key words：titanium alloy; coupling simulation; constitutive equation; grain size

Abstract: A constitutive equation was proposed to describe the effect of grain size on the deformation behavior. And a coupling simulation of deformation with heat transfer and microstructure was carried out in isothermal upsetting process of Ti60 alloy. The effects of processing parameters on the equivalent strain, the equivalent stress, the temperature rise and the grain size distribution in isothermal upsetting process of Ti60 alloy were analyzed. It is concluded that the uniformity of equivalent strain and equivalent stress increases with the increase of deformation temperature. However, the temperature rise and the grain size decreases with the increase of deformation temperature. The non-uniformity of equivalent strain, equivalent stress, temperature field and grain size increases with the increase of height reduction. And the calculated grain size using simulation is in good agreement with the experimental one.

基金信息：supports by the Fund of the State Key Laboratory of Solidification Processing in Northwestern Polytechnical University, China