In-situ observations of the tensile deformation and fracture behavior of a fine-grained titanium alloy sheet

被引：33

作者：

Zhang, Xuehua ^{[1
,2
]}

Zhang, Shuangyin ^{[3
]}

Zhao, Qinyang ^{[4
]}

Zhao, Yongqing ^{[1
,5
]}

Li, Rong ^{[2
]}

Zeng, Weidong ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

[2] Western Met Mat Co Ltd, Xian 710021, Shaanxi, Peoples R China

[3] Northwestern Polytech Univ, Sch Aeronaut, Xian 710072, Shaanxi, Peoples R China

[4] Univ Waikato, Sch Engn, Waikato Ctr Adv Mat, Hamilton 3204, New Zealand

[5] Northwest Inst Nonferrous Met Res, Xian 710016, Shaanxi, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 740卷

基金：

中国国家自然科学基金;

关键词：

Ti-6Al-4V titanium alloy; In-situ SEM; Slip band; Fracture surface; TI-6AL-4V ALLOY; MECHANICAL-PROPERTIES; SEM OBSERVATIONS; MICROSTRUCTURE; TEMPERATURE; EVOLUTION; HYDROGEN;

D O I：

10.1016/j.jallcom.2018.01.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Deformation and crack initiation of industrial Ti-6Al-4V titanium alloy sheet were investigated using in-situ scanning electron microscopy (SEM) at room temperature. The results showed that slip band originated from alpha/alpha and alpha/beta interfaces when the tension reaches the yield stage, and the slip mode develops from single slip to multi slip and finally the cross-slip occurs. Microcracks initiate primarily at the phase boundary or along the slip band within alpha phase, cracks are mainly connected along the 45 degrees line. The fracture surface is full of dimples. Intergranular cracking is the main fracture mechanism. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：660 / 668

页数：9

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