Room Temperature Creep Behavior of Ti-6Al-4V Alloy

被引：0

作者：

Xi G. ^{[1
,2
]}

Qiu J. ^{[1
,2
,3
]}

Lei J. ^{[1
,2
,3
]}

Ma Y. ^{[1
,2
,3
]}

Yang R. ^{[1
,2
,3
]}

机构：

[1] Shi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang

[2] School of Materials Science and Engineering, University of Science and Technology of China, Shenyang

[3] Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai

来源：

Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2021年 / 35卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Macrotexture; Mechanical properties; Metallic materials; Pre-plastic-strain; Room temperature creep; Ti-6Al-4V; Titanium alloy;

D O I：

10.11901/1005.3093.2021.151

中图分类号：

学科分类号：

摘要：

The room temperature creep behavior of Ti-6Al-4V alloy and its effect on subsequent mechanical properties were investigated. The results show that all these factors, such as macro-texture, creep stress level and pre-plastic-strain, have a significant impact on the room temperature creep behavior of Ti-6Al-4V. With the increase of the <0001> peak pole density along the loading direction, the work hardening exponent increases, and the creep exponent becomes smaller, resulting in the better room temperature creep property of Ti-6Al-4V. Enough high stress is the prerequisite for room temperature creep. The obvious room temperature creep behavior can be observed only when the creep stress is not lower than 0.85σy, and the room temperature strain increases with the creep stress level. Pre-plastic-strain can suppress the subsequent room temperature creep of Ti-6Al-4V, no matter the pre-plastic-strain comes from the monotonic loading or from the creep behavior. The pre-plastic-strain can deteriorate the fatigue property of the alloy, although it can reduce subsequent creep strain. © 2021, Editorial Office of Chinese Journal of Materials Research. All right reserved.

引用

页码：881 / 892

页数：11

共 36 条

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