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

被引：16

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

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2017年 / 30卷 / 12期

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

页码：1163 / 1168

页数：6

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