Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 22    No. 4    April 2012

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Numerical simulation and physical analysis for dynamic behaviors of
P/M TiAl alloy in hot-packed forging process
ZHANG Wei1, LIU Yong1, WANG Li1, LIU Bin2

1. State Key Lab oratory of Powder Metallurgy, Central South University, Changsha 410083, China;
2. Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan

Abstract: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 °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.

 

Key words: TiAl; hot packed forging; numerical simulation; physical simulation

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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