A Finite Element Simulation of NiTi Alloy during Equal Channel Angular Extrusion

武汉理工大学学报-材料科学版(英文版), 2010, 25(5): 824-828. doi: 10.1007/s11595-010-0101-4

^1, , ^2,

1.School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200240,China

2.School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200240,China

A Finite Element Simulation of NiTi Alloy during Equal Channel Angular Extrusion

WANG Weizhi ^1, , CHEN Xianhua ^2,

1.School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200240,China

2.School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200240,China

Keywords： ECAE

Particle tracking method is given to analyze the equal channel angular extrusion(ECAE)process of NiTi alloy in non-isothermal condition.The distribution of effective strain,effective stress,the temperature,and strain rate of selected particle tracking points is analyzed respectively.The influence of friction factor is also discussed.The experimental results show that under non-isothermal condition,distribution of strain,stress,strain rate and temperature are inconsistent on relative plane.Final result indicates that distribution of effective strain on xz plane is obviously different from those of isothermal condition; load predication reveals fiiction factor in this mechanism made little influence on the gross of load.

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A Finite Element Simulation of NiTi Alloy during Equal Channel Angular Extrusion

参考文献