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.
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页数：6
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