Effect of HIP Treatment on Fatigue Crack Growth Behavior of Ti-6Al-4V Alloy Fabricated by Electron Beam Melting

被引:17
作者
Liu, Yan [1 ]
Zhang, Jun [1 ]
Li, Shu-Jun [2 ]
Hou, Wen-Tao [2 ]
Wang, Hao [2 ]
Xu, Qin-Si [2 ]
Hao, Yu-Lin [2 ]
Yang, Rui [2 ]
机构
[1] Shenyang Univ, Coll Mech Engn, Shenyang 110044, Liaoning, Peoples R China
[2] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
基金
中国国家自然科学基金;
关键词
Electron beam melting; Ti-6Al-4V; Fatigue crack growth rate; alpha Lamella; Pores; MECHANICAL-PROPERTIES; MELTED TI-6AL-4V; TITANIUM-ALLOY; POROUS STRUCTURES; CORROSION-RESISTANCE; MICROSTRUCTURE; LASER; DEFORMATION; PROPAGATION; PLASTICITY;
D O I
10.1007/s40195-017-0665-5
中图分类号
TF [冶金工业];
学科分类号
0806 ;
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 (Delta K < 18 MPa m(1/2)). 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.
引用
收藏
页码:1163 / 1168
页数:6
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