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

• Published in: Transactions of Nonferrous Metals Society of China Vol. 20; no. 5; pp. 849 - 856
• Main Author: 罗皎 李淼泉
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.05.2010; School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
• Subjects: constitutive equation; coupling simulation; Deformation; Equivalence; Grain size; Joining; Simulation; Strain; Stresses; titanium alloy; Titanium base alloys; Upsetting; 晶粒尺寸分布; 晶粒尺寸效应; 等效应变; 等温过程; 结构变形; 耦合模拟; 铁基合金; constitutive equation; titanium alloy; grain size; coupling simulation
• ISSN: 1003-6326
• DOI: 10.1016/S1003-6326(09)60225-9

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.