NUMERICAL STUDY ON RHEOCASTING A356 ALLOY USING COOLING SLOPE METHOD
Numerical simulation on thermal and velocity field of flowing melt during cooling slope process was fulfilled in present paper. The results indicated that an environment which would be preferable to copious nucleation and uniform distribution of solute and temperature was created. At the same time, copious nucleation of the primary particle during the early stages of solidification coupled with forced convection resulted in the formation of thixotropic semisolid structures. In addition, a developed three- phase model of globular equiaxed grain solidification was applied to simulate on the fluidity characterization of the metal liquid flowing on the slope. It was suggested that the grain size and solid fraction had their maximum at the end of the cooling slope. Microstructure with rheocasting A356 aluminum alloy indicated approximately agreement with simulated results.
Simulation Cooling slope process Rheocasting A356 alloy.
Xiaoli ZHANG Tongmin WANG Tingju LI Haitao TENG Bin WEN Shuisheng XIE Junze JIN
School of Materials Science and Engineering, Dalian University of Technology, Dalian Liaoning 116024 Beijing General Research Institute for Non-ferrous Metals, Beijing 100088, China
国际会议
大连
英文
643-648
2007-08-19（万方平台首次上网日期，不代表论文的发表时间）