Numerical simulation and physical analysis for dynamic behaviors of P/M TiAl alloy in hot-packed forging process

被引：13

作者：

Zhang Wei ^{[1
]}

Liu Yong ^{[1
]}

Wang Li ^{[1
]}

Liu Bin ^{[2
]}

机构：

[1] Cent S Univ, State Key Lab oratory Powder Met, Changsha 410083, Peoples R China

[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2012年 / 22卷 / 04期

关键词：

TiAl; hot packed forging; numerical simulation; physical simulation; VALVES;

D O I：

10.1016/S1003-6326(11)61263-6

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The hot forging of large-scale P/M TiAl alloy billet deformation was investigated based on a joint application of Deform-3D-based numerical simulation and physical simulation techniques. The temperature dependence on the thermal and mechanical properties of the billet was considered and the optimum hot working temperature of packed TiAl alloy was 1150-1200 degrees C. Based on the simulation, the material flow and thermo mechanical field variables, such as stress, strain, and temperature distribution were obtained and the relationships of load-displacement and load-time were figured out. To verify the validity of the simulation results, the experiments were also carried out in a forging plant, and a pancake with diameter of 150 mm was obtained exhibiting a regular shape.

引用

页码：901 / 906

页数：6