NUMERICAL SIMULATION OF EXTRUSION OF COMPOSITE POWDERS PREPARED BY HIGH ENERGY MILLING
来源期刊：Acta Metallurgica Sinica2004年第1期
论文作者：Q.L.Zhu W.Xia Y.Y.Li X.Q.Li E.D.Wang W.P.Chen
Key words：high energy milling; composite powder; plastic constitutive equation; extrusion; numerical simulation;
Abstract: Based on the characteristic of high energy milling and the micromechanics of composite material, a plastic constitutive equation is implemented for milled composite powders. To check the equation, the extrusion of Ti/Al composite powders prepared by high energy milling was simulated. It was from the numerical analysis that the predicted extrusion pressure mounted up with milling time and extrusion ratio increasing,which was perfect agreement with experimental results.
Q.L.Zhu1，W.Xia1，Y.Y.Li1，X.Q.Li1，E.D.Wang2，W.P.Chen1
(1.College of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China;
2.School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)
Abstract:Based on the characteristic of high energy milling and the micromechanics of composite material, a plastic constitutive equation is implemented for milled composite powders. To check the equation, the extrusion of Ti/Al composite powders prepared by high energy milling was simulated. It was from the numerical analysis that the predicted extrusion pressure mounted up with milling time and extrusion ratio increasing,which was perfect agreement with experimental results.
Key words:high energy milling; composite powder; plastic constitutive equation; extrusion; numerical simulation;
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