Achieving high precipitation phase proportion and mechanical properties of vacuum electron beam oscillation welded joints of near β titanium alloy thick plates by the interlayer addition

doi:10.1016/j.vacuum.2024.113725

IMR OpenIR

	Achieving high precipitation phase proportion and mechanical properties of vacuum electron beam oscillation welded joints of near β titanium alloy thick plates by the interlayer addition
	Li, F. S.1,2; Wu, L. H.1,2; Li, H. J.1; Hua, P. T.3; Xue, P.1,2; Ni, D. R.1,2; Xiao, B. L.1,2; Ma, Z. Y.1,2
通讯作者	Wu, L. H.(lhwu@imr.ac.cn)
	2024-12-01
发表期刊	VACUUM
ISSN	0042-207X
卷号	230 页码:16
摘要	The strengths of near (3 titanium alloy thick plate joints are usually reduced after fusion welding since only a small amount of alpha phase precipitates during cooling. In this study, vacuum electron beam welding (VEBW) with a 1-mm-thick Ti-6Al-4V (Ti-64) interlayer using novel sawtooth scanning (SS) pattern was designed to regulate the morphology and proportion of alpha phase in 30-mm-thick near (3 titanium alloy Ti-5Al-5Mo-5V-1Cr-1Fe, which largely enhanced the joint properties. The SS-joint with Ti-64 interlayer enhanced the joint strength most, with the increase in the tensile strength from 849 MPa for the joint without interlayer addition to 991 MPa for the SSjoint, which could usually reach similar strengths to the annealing treatment joints as reported. The improved strength was mainly attributed to largely increased proportion of acicular alpha phase for the SS-FZ with Ti-64 interlayer. The fracture location of the SS-joint with Ti-64 interlayer was in the heat affected zone (HAZ). Furthermore, the impact energy of HAZ in SS-joint was slightly higher than that of HAZ without interlayer addition, even superior to that of base material. This study provides a new economy and high efficiency welding method to improve the mechanical properties of near (3 titanium alloy thick plates.
关键词	Near beta titanium alloys Vacuum electron beam welding Interlayer addition Mechanical properties Microstructure
资助者	National Key Research and Devel-opment Program of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
DOI	10.1016/j.vacuum.2024.113725
收录类别	SCI
语种	英语
资助项目	National Key Research and Devel-opment Program of China[2023YFC2810700] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2021193]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:001342008100001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：1[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/321006/190824
专题	中国科学院金属研究所
通讯作者	Wu, L. H.
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Hunan Xiangtou Goldsky Titanium Ind Technol Co Ltd, 97 Qianming Rd, Changde 415001, Peoples R China
推荐引用方式 GB/T 7714	Li, F. S.,Wu, L. H.,Li, H. J.,et al. Achieving high precipitation phase proportion and mechanical properties of vacuum electron beam oscillation welded joints of near β titanium alloy thick plates by the interlayer addition[J]. VACUUM,2024,230:16.
APA	Li, F. S..,Wu, L. H..,Li, H. J..,Hua, P. T..,Xue, P..,...&Ma, Z. Y..(2024).Achieving high precipitation phase proportion and mechanical properties of vacuum electron beam oscillation welded joints of near β titanium alloy thick plates by the interlayer addition.VACUUM,230,16.
MLA	Li, F. S.,et al."Achieving high precipitation phase proportion and mechanical properties of vacuum electron beam oscillation welded joints of near β titanium alloy thick plates by the interlayer addition".VACUUM 230(2024):16.