Realizing deep penetration and superior mechanical properties in a titanium alloy thick plate joint via vacuum laser beam welding

doi:10.1016/j.jmrt.2023.08.059

IMR OpenIR

	Realizing deep penetration and superior mechanical properties in a titanium alloy thick plate joint via vacuum laser beam welding
	Li, F. S.1,2; Wu, L. H.1,2,3; Zhao, H. B.1,2; Xue, P.1,2,3; 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) ; Ni, D. R.(drni@imr.ac.cn)
	2023-09-01
发表期刊	JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
ISSN	2238-7854
卷号	26 页码:2254-2264
摘要	It is usually very difficult for achieving deep penetration in titanium alloy thick plates by conventional laser beam welding (LBW) under the atmospheric environment, since the laser beam energy is easily dissipated in air. In this study, LBW in a low vacuum environment (100 Pa) was proposed to realize the deep weld penetration of 16 mm of Ti-6Al -4V alloy thick plate, which was over 1 time deeper than that in the atmospheric joint (7 mm). In addition, the contents of the impurity gas elements (N, H and O) hardly changed after vacuum LBW (VLBW), ensuring the welding quality. The fusion zone mainly consisted of acicular a0 martensite, which enhanced the a0/a0 interface strengthening, resulting in the higher microhardness than that of the base material. The average tensile strength of the joint achieved 1010 MPa, with the strength efficiency 100%. Microstructure evolution mechanisms during VLBW were discussed. This study provides a reference for the engineering application of VLBW of titanium alloy thick plates. & COPY; 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词	Titanium alloys Vacuum laser beam welding Microstructure Mechanical properties
资助者	Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Liaoning Provincial Natural Science Foundation
DOI	10.1016/j.jmrt.2023.08.059
收录类别	SCI
语种	英语
资助项目	Youth Innovation Promotion Association of the Chinese Academy of Sciences[Y2021061] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2021193] ; Liaoning Provincial Natural Science Foundation[2021-YQ-01]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001068274000001
出版者	ELSEVIER
引用统计	被引频次：8[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/321006/179260
专题	中国科学院金属研究所
通讯作者	Wu, L. H.; Ni, D. R.
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.Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, F. S.,Wu, L. H.,Zhao, H. B.,et al. Realizing deep penetration and superior mechanical properties in a titanium alloy thick plate joint via vacuum laser beam welding[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2023,26:2254-2264.
APA	Li, F. S..,Wu, L. H..,Zhao, H. B..,Xue, P..,Ni, D. R..,...&Ma, Z. Y..(2023).Realizing deep penetration and superior mechanical properties in a titanium alloy thick plate joint via vacuum laser beam welding.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,26,2254-2264.
MLA	Li, F. S.,et al."Realizing deep penetration and superior mechanical properties in a titanium alloy thick plate joint via vacuum laser beam welding".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 26(2023):2254-2264.