摘要
To gain a better understanding of thixoforging for the Al_(2)O_(3)-37%Al composite,its mechanical behavior in the pseudo-semi-solid state was studied by isothermal compression tests.The results show that the values of peak stress obviously decrease with increasing temperature and decreasing strain rate.The compressive true stress-strain curves of the Al_(2)O_(3)-37%Al composite can be divided into four stages.They are rapidly ascending,decreasing,steady and slowly ascending.Moreover,the main deformation mechanism controlling deformation of the composite in the pseudo-semi-solid state is the sliding or rotary movement between solid particles.
作者
程远胜
罗守靖
CHENG Yuan-sheng;LUO Shou-jing(School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China)
基金
Project(50705018)supported by the National Natural Science Foundation of China
Project(20070420847)supported by the Postdoctor Foundation of China
Project(LBH-Z07140)supported by the Postdoctor Foundation of Heilongjiang。