Effect of hydrogen content on impact property of A357 alloy

摘要：

The impact specimens with different hydrogen contents were solution treated at 540±3C for 12h; water quenched at 60-100C; and aged at 165±1C for 6h. The impact test was carried out at Roell450 pendulum impact testing machine. The impact test results show that the impact energy has strong relation with the hydrogen content. The total absorption energy increases with the increasing of hydrogen content. The crack propagation energy Avp and present larger proportion than the initial crack energy Avi in the total absorption energy Av. The number of the pinholes increases and the pinholes turn from smaller irregular ones into sub-circular shape ones. The specimen with irregular sub-circular pinholes has larger KI, and has more crack propagation resistance.

作者: Yang Li Zhengbin Xu Jianmin Zeng

作者单位: Key Lab.of Nonferrous Materials and New Processing Technology, Guangxi University,Nanning, P.R.China

会议类型: 国际会议

会议名称: The 6th International Conference on Physical and Numerical Simulation of Materials Processing(第六届材料与热加工物理模拟及数值模拟国际学术会议 ICPNS 2010)

会议地点: 桂林

会议语种:英文

页码: 1-5

在线出版日期: 2010-11-16（万方平台首次上网日期，不代表论文的发表时间）