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《Special Casting & Nonferrous Alloys》 2010-01
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Numerical Simulation of Filling of Rheo-diecasting A357 Aluminum Alloy

Zheng Peng,Xu Jun,Zhang Zhifeng,Bai Yuelong,Shi Likai(General Researc Institute for Non-ferrous Metals,Beijing,China)  
Filling of rheo-diecasting A357 aluminum alloy and distribution of gas hole in the alloy were simulated by the Flow-3D software at different injection pressure and different injection speed,and solidification process was visualized too.The experiment was conducted to validate the simulated results.The results reveal that flow morphology of semi-solid A357 aluminum alloy melt is transformed from laminar structure into turbulence structure with increasing in injection pressure and injection velocity,meanwhile,distribution of gas hole in the solidification process is also affected.The simulated results are well in agreement with experimental ones,showing that the Flow-3D software can optimize processing parameters of rheo-diecasting A357 aluminum alloy and improve the properties of the die castings.
【Key Words】： Semi-solid Rheo-diecasting Flow-3D Numerical Simulation
【Fund】： 国家高技术研究发展计划(863计划)资助项目(2006AA03Z115);; 国家重点基础研究发展计划(973计划)资助项目(2006CB605203)
【CateGory Index】： TG249.9
【DOI】： CNKI:SUN:TZZZ.0.2010-01-024
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