Microstructure, texture and mechanical studies of an inconspicuous shear band formed during hot compression of Ti-6Al-4V alloy

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	Microstructure, texture and mechanical studies of an inconspicuous shear band formed during hot compression of Ti-6Al-4V alloy
	Liu, Chengze ; Guan, Hong ; Tai, Qingan ; Yuan, Fusen ; Han, Fuzhou ; Gu, Hengfei ; Zhang, Lifeng ; Li, Geping
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2017-06-20
卷号	698 页码:18-26
关键词	Ti-6A1-4V Shear band Microstructure Texture EBSD
ISSN号	0921-5093
通讯作者	Li, GP (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
中文摘要	Systematical studies on an inconspicuous shear band formed during hot isothermal forging of Ti-6A1-4V alloy were carried out. During the compression of Ti-6A1-4V alloy in high reduction (> 50%), severe shear strain concentrated in the maximum shearing plane in the geometric center of the bulk samples leading to the nucleation of shear band (SB). Grains in SB were refined and elongated with their long axis parallel to the local shearing direction. Electron backscattered diffraction (EBSD) analysis showed that grains in SB were not strongly orientated containing two weak orientations making {0001} planes of cc phase parallel to the compression direction, and {1010} planes of a phase parallel to the compression direction and, meanwhile, the normal direction of its {0001} planes similar to 34 degrees away from the compression direction. The observed textures in SB were resulted from slipping and twinning during the hot compression. Pyramidal slip was preferred in SB as well as in its surrounding matrix (M). In addition, {1011} < 1012 > twinning was preferentially activated in SB, which is different for M with {1012} < IOU > twinning preferred due to different plastic deformation degrees in SB and M during the hot compression. To evaluate the influence of SB on the mechanical properties of the alloy, micro hardness and tensile tests were employed. The alloy in SB had been proved to be slightly strengthened compared to M, which was resulted from both the grain refinement and the texture diversity.
学科主题	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
收录类别	SCI
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78081]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Liu, Chengze,Guan, Hong,Tai, Qingan,et al. Microstructure, texture and mechanical studies of an inconspicuous shear band formed during hot compression of Ti-6Al-4V alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2017,698:18-26.
APA	Liu, Chengze.,Guan, Hong.,Tai, Qingan.,Yuan, Fusen.,Han, Fuzhou.,...&Li, Geping.(2017).Microstructure, texture and mechanical studies of an inconspicuous shear band formed during hot compression of Ti-6Al-4V alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,698,18-26.
MLA	Liu, Chengze,et al."Microstructure, texture and mechanical studies of an inconspicuous shear band formed during hot compression of Ti-6Al-4V alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 698(2017):18-26.