Enhancing precipitation phase proportion and mechanical properties in thick plate welded joints of a near β titanium alloy via electron beam scanning welding with waveform design

doi:10.1016/j.matchar.2024.113791

IMR OpenIR

	Enhancing precipitation phase proportion and mechanical properties in thick plate welded joints of a near β titanium alloy via electron beam scanning welding with waveform design
	Li, F. S.1,2; Wu, L. H.1,2; Li, H. J.1; Hua, P. T.3; Ni, D. R.1,2; Xue, P.1,2; Jiang, Y. L.1; 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)
	2024-04-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	210 页码:14
摘要	It is generally difficult to obtain excellent joint properties of near beta titanium alloy thick plates via electron beam scanning welding (EBSW) with traditional circular scanning pattern (Pattern I) due to the precipitation difficulty of the strengthening alpha phase. In this study, EBSW with two novel scanning patterns besides Pattern I, including sine scanning (Pattern II) and sawtooth scanning (Pattern III) was designed to change the moving path of electron beam and regulate the precipitation of alpha phase in 30-mm-thick near beta titanium alloy Ti-5Al-5Mo-5V-1Cr-1Fe, which improved the joint properties. Among them, the Pattern III enhanced the joint hardness and strength most, from 299 HV for Pattern I to 340 HV for Pattern III, which was mainly attributed to the largely increased proportion of acicular alpha phase in the fusion zone from 6% for Pattern I to 47% for Pattern III. The moving path of electron beam was in a single direction in Pattern III, avoiding the mutual overlaps between waveforms in Pattern I. It caused the stabilization of the welding pool in advance by continuously stirring in Pattern III, promoting the precipitation of acicular alpha phase. Furthermore, for the joint in Pattern III, the average fracture toughness was 69.3 MPa & sdot;m(1/2) which was 92.0% larger than that of the BM. This study provides a new way to achieve superior EBW joint mechanical properties of near beta titanium alloy thick plates.
关键词	Near beta titanium alloys Electron beam scanning welding Mechanical properties Microstructure
资助者	National Key Research and Devel- opment Program of China ; Youth Innova- tion Promotion Association of the Chinese Academy of Sciences ; Liaoning Revitalization Talents Program
DOI	10.1016/j.matchar.2024.113791
收录类别	SCI
语种	英语
资助项目	National Key Research and Devel- opment Program of China[2023YFC2810700] ; Youth Innova- tion Promotion Association of the Chinese Academy of Sciences[2021193] ; Liaoning Revitalization Talents Program[XLYC2002099]
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:001205484200001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：6[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/321006/185575
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.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. Enhancing precipitation phase proportion and mechanical properties in thick plate welded joints of a near β titanium alloy via electron beam scanning welding with waveform design[J]. MATERIALS CHARACTERIZATION,2024,210:14.
APA	Li, F. S..,Wu, L. H..,Li, H. J..,Hua, P. T..,Ni, D. R..,...&Ma, Z. Y..(2024).Enhancing precipitation phase proportion and mechanical properties in thick plate welded joints of a near β titanium alloy via electron beam scanning welding with waveform design.MATERIALS CHARACTERIZATION,210,14.
MLA	Li, F. S.,et al."Enhancing precipitation phase proportion and mechanical properties in thick plate welded joints of a near β titanium alloy via electron beam scanning welding with waveform design".MATERIALS CHARACTERIZATION 210(2024):14.