In-situ investigation on tensile deformation and fracture behaviors of Ti60 alloy rolled sheet with equiaxed microstructure

doi:10.1016/j.jallcom.2022.166464

IMR OpenIR

	In-situ investigation on tensile deformation and fracture behaviors of Ti60 alloy rolled sheet with equiaxed microstructure
	Wang, Boning 1,3,4; Zeng, Weidong 1,3,4; Zhao, Zibo 2; Jia, Runchen 1,3,4; Xu, Jianwei 1,3,4; Wang, Qingjiang 2
通讯作者	Zeng, Weidong(zengwd@nwpu.edu.cn) ; Zhao, Zibo(zbzhao@imr.ac.cn)
	2022-11-25
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	923 页码:13
摘要	In this work, the deformation mechanism and fracture behavior of Ti60 alloy sheet with equiaxed micro-structure (the volume fraction of equiaxed alpha grains is 68%) using the in-situ tensile test were studied by in -situ scanning electron microscope (SEM) and electron backscattering diffraction (EBSD). The results show that equiaxed alpha grains activate three coordinated deformation mechanisms, mainly single slip mode, supplemented by slip transfer and grain rotation. The alloy is mainly coordinated by equiaxed alpha grain de-formation, dominated by prismatic < a > and basal < a > slip, and prismatic slip in (1010) plane and [1210] direction as the most active slip system. With the increase of deformation, the soft oriented equiaxed alpha grains preferentially occur prismatic slip, while some hard oriented grains rotate in the direction favorable to slip. When there is no slip transfer between adjacent grains, dislocation pile-up at the grain boundary and causes stress concentration, which makes the grain boundary easy to become the crack nucleation point. In SEM and EBSD studies, lamellar alpha grains have no obvious deformation characteristics. However, TEM study found that some lamellar alpha grains were kinked, which led to lamellar fracture and the formation of high-density dislocation areas around them. Meanwhile, due to the large difference in coordinated deformation ability between equiaxed alpha grains and lamellar alpha grains and between equiaxed alpha hard and soft oriented grains. Therefore, cracks are initiated, propagated and fractured mainly at the junction of the alpha colony composed of lamellar alpha grains and at the equiaxed alpha grain boundary.(c) 2022 Elsevier B.V. All rights reserved.
关键词	Ti60 alloy In -situ tensile Equiaxed ? grain Crack propagation Coordinated deformation
资助者	National Major Science and Technology Project ; National Natural Science Foundation of China
DOI	10.1016/j.jallcom.2022.166464
收录类别	SCI
语种	英语
资助项目	National Major Science and Technology Project ; National Natural Science Foundation of China ; [J2019 -VI -0005-0119] ; [51905436]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000862938400002
出版者	ELSEVIER SCIENCE SA
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/321006/175994
专题	中国科学院金属研究所
通讯作者	Zeng, Weidong; Zhao, Zibo
作者单位	1.Northwestern Polytech Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Xian 710072, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Northwestern Polytech Univ, Def Technol Innovat Ctr Precis Forging & Ring roll, Sch Mat Sci & Engn, Xian 710072, Peoples R China 4.Northwestern Polytech Univ, Shaanxi Key Lab High Performance Precis Forming Te, Xian 710072, Peoples R China
推荐引用方式 GB/T 7714	Wang, Boning,Zeng, Weidong,Zhao, Zibo,et al. In-situ investigation on tensile deformation and fracture behaviors of Ti60 alloy rolled sheet with equiaxed microstructure[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,923:13.
APA	Wang, Boning,Zeng, Weidong,Zhao, Zibo,Jia, Runchen,Xu, Jianwei,&Wang, Qingjiang.(2022).In-situ investigation on tensile deformation and fracture behaviors of Ti60 alloy rolled sheet with equiaxed microstructure.JOURNAL OF ALLOYS AND COMPOUNDS,923,13.
MLA	Wang, Boning,et al."In-situ investigation on tensile deformation and fracture behaviors of Ti60 alloy rolled sheet with equiaxed microstructure".JOURNAL OF ALLOYS AND COMPOUNDS 923(2022):13.