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

IMR OpenIR

	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; Li, GP (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
	2017-06-20
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	698 页码:18-26
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.; 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.
部门归属	[liu, chengze ; yuan, fusen ; han, fuzhou ; gu, hengfei ; zhang, lifeng ; li, geping] chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china ; [liu, chengze ; yuan, fusen ; han, fuzhou ; zhang, lifeng] univ sci & technol china, sch mat sci & engn, 96 jinzhai rd, hefei 230026, anhui, peoples r china ; [guan, hong ; tai, qingan] avic shenyang liming aeroengine grp corp ltd, 6 dongta rd, shenyang 110043, peoples r china
关键词	Ti-6a1-4v Shear Band Microstructure Texture Ebsd
学科领域	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
收录类别	SCI
语种	英语
WOS记录号	WOS:000405251900003
引用统计	被引频次：30[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/321006/78081
专题	中国科学院金属研究所
通讯作者	Li, GP (reprint author), Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
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, GP .(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.