Tensile properties of as-deformed 2A50 aluminum alloy in semi-solid state
Tensile properties of as-deformed 2A50 aluminum alloy were investigated in the high temperature solid and semi-solid states.The results show that temperature has almost no effect on the maximum tensile stress between 500 ℃ and 530 ℃,and the maximum tensile stress decreases rapidly when the temperature is above 532 ℃.The ductility decreases with increasing temperature and has an obvious fall when the temperature is above solidus temperature.This alloy almost has no ductility above 537 ℃,and cannot sustain tensile stress above 550 ℃.A brittle temperature range in which this alloy is prone to form microcracks was derived.The relation between microstructure,fraction solid and tensile properties were also investigated by examining the metallograph and fracture surface morphology of tested specimens,which could provide reference for forecasting the microcracks in this alloy occurring in semi-solid processing.
tensile properties aluminum alloy semi-solid microcracks forecast
DU Zhi-ming CHEN Gang LIU Jun XIE Shui-sheng
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;St School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China State Key Laboratory for Fabrication and Processing of Nonferrous Metals, General Research Institute
国际会议
北京
英文
1597-1602
2010-09-16（万方平台首次上网日期，不代表论文的发表时间）