Inhomogeneous Fatigue Characteristics of Welded Ti-6Al-4V Thick Plate by the Electron Beam Method

doi:10.1007/s12540-020-00719-4

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	Inhomogeneous Fatigue Characteristics of Welded Ti-6Al-4V Thick Plate by the Electron Beam Method
	Wang, Haiyan 1; Zeng, Caiyou 1; Zhang, Yupeng 1; Zhou, Yu 2; Dong, Chunlin 1
刊名	METALS AND MATERIALS INTERNATIONAL
	2020-04-24
页码	9
关键词	Ti-6Al-4V Inhomogeneity Fatigue property Electron beam welding Thick plate
ISSN号	1598-9623
DOI	10.1007/s12540-020-00719-4
通讯作者	Zhang, Yupeng(zhangyp@gwi.gd.cn)
英文摘要	To recognize the specific safety problem brought by an increasing thickness, the layered microstructures, fatigue properties and the fractographies of a 100 mm-thick Ti-6Al-4V joint via electron beam welding were investigated. The results show that the seam zone has textural and mechanical heterogeneities in the layered thickness regions. The mid layer has the lowest fatigue life and different fracture-position tendency (more broken in seam zone) due to the hybrid influences of the grain size and the phase fraction of alpha ' and beta phases. The fatigue cracks initiate on the surfaces of fatigue specimens and grow in the transgranular fracture mode. The fatigue deformation mode is adapted to the planar-slip mechanism with different degrees of dislocation blocking in distinct layers, which results in a "mid-layer favorite" crack initiation trend. Moreover, the mid layer has the highest crack propagation rate either. Graphic
资助项目	GDAS's Project of Constructing Domestic First-class Research Institutions[2019GDASYL-0103075] ; GDAS's Project of Constructing Domestic First-class Research Institutions[2018GDASCX-0113] ; GDAS's Project of Constructing Domestic First-class Research Institutions[2020GDASYL-20200103122] ; Science and Technology Planning Project of Guangdong Province[2016B070701025] ; Science and Technology Planning Project of Guangdong Province[2017A070701026] ; Science and Technology Planning Project of Guangdong Province[2015-10]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	KOREAN INST METALS MATERIALS
WOS记录号	WOS:000528415300001
资助机构	GDAS's Project of Constructing Domestic First-class Research Institutions ; Science and Technology Planning Project of Guangdong Province
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/138592]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Yupeng
作者单位	1.Guangdong Welding Inst, Key Lab Adv Welding Technol, Adv Mat R&D Ctr, Guangzhou 510651, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, Haiyan,Zeng, Caiyou,Zhang, Yupeng,et al. Inhomogeneous Fatigue Characteristics of Welded Ti-6Al-4V Thick Plate by the Electron Beam Method[J]. METALS AND MATERIALS INTERNATIONAL,2020:9.
APA	Wang, Haiyan,Zeng, Caiyou,Zhang, Yupeng,Zhou, Yu,&Dong, Chunlin.(2020).Inhomogeneous Fatigue Characteristics of Welded Ti-6Al-4V Thick Plate by the Electron Beam Method.METALS AND MATERIALS INTERNATIONAL,9.
MLA	Wang, Haiyan,et al."Inhomogeneous Fatigue Characteristics of Welded Ti-6Al-4V Thick Plate by the Electron Beam Method".METALS AND MATERIALS INTERNATIONAL (2020):9.