Study of low-temperature impact deformation behavior of Ti-6Al-4V alloy

被引：7

作者：

Li, D. ^{[1
,2
]}

Meng, Z. C. ^{[1
,2
]}

Shen, Y. Y. ^{[1
]}

Zhang, J. H. ^{[1
,2
]}

Hu, M. ^{[1
]}

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

Li, S. J. ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China

来源：

VACUUM | 2024年 / 222卷

基金：

中国国家自然科学基金;

关键词：

Titanium alloy; Impact toughness; Twinning; Low temperature; GRAIN-BOUNDARIES; TITANIUM-ALLOY; TOUGHNESS; STRENGTH;

D O I：

10.1016/j.vacuum.2024.113066

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The impact behavior of the Ti-6Al-4V alloy has been investigated at varying temperatures (298 K, 223 K, 77 K) in this study. The results reveal a decrease in toughness with reduced temperature, with notable changes in energy distribution between crack initiation and propagation. The {1012}alpha twins formed in the studied sample under impact loading at 298 K and 223 K, and were absent at 77 K. The formation and propagation of twins contribute to the higher toughness of the 298 K and 223 K samples. These findings would provide valuable guidance to optimize the Ti-6Al-4V alloy toughness in low-temperature environments.

引用

页数：6