The stress-induced α" and its effect on the aging microstructure and mechanical properties in an α plus β titanium alloy

doi:10.1016/j.matchar.2024.113734

IMR OpenIR

	The stress-induced α" and its effect on the aging microstructure and mechanical properties in an α plus β titanium alloy
	Jia, Yandi 1,2; Ma, Yingjie 1,2; Su, Huhu 3; Huang, Sensen 2; Wang, Qian 2; Qi, Min 2; Yang, Yujing 1,2; Zheng, Shijian 3; Lei, Jiafeng 1,2; Yang, Rui 1,2
通讯作者	Ma, Yingjie(yjma@imr.ac.cn)
	2024-03-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	209 页码:12
摘要	The stress-induced alpha '' martensite transformation always sacrifices the yield strength in titanium alloys with specific beta stability. Here, a detailed analysis for the microstructure transformation of the stress-induced alpha '' martensite during isothermal aging is carried out using the traditional experimental characterizations based on the transmission electron microscope (TEM) in an alpha + beta Ti-alloy, namely Ti-3Al-5Mo-4.5 V (wt%) alloy. The results show that the stress-induced alpha '' plates transform to the isothermal-alpha '' due to the local solute redistribution (Al, Mo, V) during the one-step isothermal aging at 400 degrees C. Subsequently, the ladder-like alpha(s) precipitates due to the decomposition of stress-induced alpha '' or isothermal-alpha '' after aging at 550 degrees C, eliminating the influence of stress-induced alpha '' martensite on the yield strength. Besides, the ultrafine alpha(s) is obtained by the refinement of isothermal omega during two-step aging at 550 degrees C. And the ultimate tensile strength increases slightly due to the precipitate of ladder-like and ultrafine alpha(s) after two-step aging at 550 degrees C. The present study provides a novel way to obtain the alpha lamellae and improve the mechanical properties of titanium alloys.
关键词	alpha '' martensite omega phase Secondary alpha lamellae Phase transformation Titanium alloys
资助者	National Key Research and Development Program of China ; Natural Science Foundation of China ; CAS Project for Young Scientists in Basic Research ; Youth Innovation Promotion Association CAS
DOI	10.1016/j.matchar.2024.113734
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2021YFC2801801] ; Natural Science Foundation of China[U2106215] ; CAS Project for Young Scientists in Basic Research[YSBR-025] ; Youth Innovation Promotion Association CAS
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:001206471600001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/185507
专题	中国科学院金属研究所
通讯作者	Ma, Yingjie
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin Key Lab Mat Laminating Fabricat & Interfac, Tianjin 300401, Peoples R China
推荐引用方式 GB/T 7714	Jia, Yandi,Ma, Yingjie,Su, Huhu,et al. The stress-induced α" and its effect on the aging microstructure and mechanical properties in an α plus β titanium alloy[J]. MATERIALS CHARACTERIZATION,2024,209:12.
APA	Jia, Yandi.,Ma, Yingjie.,Su, Huhu.,Huang, Sensen.,Wang, Qian.,...&Yang, Rui.(2024).The stress-induced α" and its effect on the aging microstructure and mechanical properties in an α plus β titanium alloy.MATERIALS CHARACTERIZATION,209,12.
MLA	Jia, Yandi,et al."The stress-induced α" and its effect on the aging microstructure and mechanical properties in an α plus β titanium alloy".MATERIALS CHARACTERIZATION 209(2024):12.