Effect of HIP Treatment on Fatigue Crack Growth Behavior of Ti–6Al–4V Alloy Fabricated by Electron Beam Melting
来源期刊：Acta Metallurgica Sinica2017年第12期
论文作者：Yan Liu Jun Zhang Shu-Jun Li Wen-Tao Hou Hao Wang Qin-Si Xu Yu-Lin Hao Rui Yang
文章页码：1163 - 1168
摘 要：The effect of hot isostatic pressing treatment on the fatigue crack growth behavior of Ti–6Al–4V alloy fabricated by electron beam melting was investigated.The results indicate that the fatigue crack growth rate of the HIPed samples is higher than that of the as-fabricated one under certain stress intensity factor(DK\18 MPa m1/2).With further increase in DK,the fatigue crack growth rates of the studied two samples become similar.The variation of a lamella thickness and the pore defects distribution have an effect on the fatigue crack growth rates in the studied samples,and the latter plays the dominant role.
Yan Liu1，Jun Zhang1，Shu-Jun Li2，Wen-Tao Hou2，Hao Wang2，Qin-Si Xu2，Yu-Lin Hao2，Rui Yang2
1. College of Mechanical Engineering,Shenyang University2. Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences
摘 要：The effect of hot isostatic pressing treatment on the fatigue crack growth behavior of Ti–6Al–4V alloy fabricated by electron beam melting was investigated.The results indicate that the fatigue crack growth rate of the HIPed samples is higher than that of the as-fabricated one under certain stress intensity factor(DK\18 MPa m1/2).With further increase in DK,the fatigue crack growth rates of the studied two samples become similar.The variation of a lamella thickness and the pore defects distribution have an effect on the fatigue crack growth rates in the studied samples,and the latter plays the dominant role.
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