Characterizations of microstructure and crystallographic orientation in a near-alpha titanium alloy billet

IMR OpenIR

	Characterizations of microstructure and crystallographic orientation in a near-alpha titanium alloy billet
	Zhao, Z. B.; Wang, Q. J.; Liu, J. R.; Yang, R.; Wang, QJ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
	2017-07-25
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	712 页码:179-184
摘要	Previous studies have found that the alpha+beta and near-alpha titanium alloys often contain large regions, referred as macrozones, with sharp local texture that differs from one region to the next. In this work the characterizations of microstructure and crystallographic orientation heterogeneities were studied by optical microscopy and electron backscattered diffraction techniques in a billet of a near-alpha titanium alloy Ti60. It was found that a heterogeneous microstructure, both in orientation distribution and morphology, comprising remnants of alpha lamellae along the axis direction and equiaxed alpha grain was found in the longitudinal section of the billet. In the billet, a weak <11-204>//AD fiber texture component was found, and this texture component was related to the special deformation mode for the billet and recrystallization texture in hexagonal close-packed metals. The deformation was mainly supported by prismatic slip in the alpha phase during forging according to in-grain misorientation axis analysis, while many subgrains/grains with low-angle boundaries were found within an apparent alpha grain under EBSD observation. (C) 2017 Elsevier B.V. All rights reserved.; Previous studies have found that the alpha+beta and near-alpha titanium alloys often contain large regions, referred as macrozones, with sharp local texture that differs from one region to the next. In this work the characterizations of microstructure and crystallographic orientation heterogeneities were studied by optical microscopy and electron backscattered diffraction techniques in a billet of a near-alpha titanium alloy Ti60. It was found that a heterogeneous microstructure, both in orientation distribution and morphology, comprising remnants of alpha lamellae along the axis direction and equiaxed alpha grain was found in the longitudinal section of the billet. In the billet, a weak <11-204>//AD fiber texture component was found, and this texture component was related to the special deformation mode for the billet and recrystallization texture in hexagonal close-packed metals. The deformation was mainly supported by prismatic slip in the alpha phase during forging according to in-grain misorientation axis analysis, while many subgrains/grains with low-angle boundaries were found within an apparent alpha grain under EBSD observation. (C) 2017 Elsevier B.V. All rights reserved.
部门归属	[zhao, z. b. ; wang, q. j. ; liu, j. r. ; yang, r.] chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	Titanium Alloys Microstructure Texture Globularization Ebsd
学科领域	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
收录类别	SCI
语种	英语
WOS记录号	WOS:000401881000024
引用统计	被引频次：44[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/321006/78035
专题	中国科学院金属研究所
通讯作者	Wang, QJ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Zhao, Z. B.,Wang, Q. J.,Liu, J. R.,et al. Characterizations of microstructure and crystallographic orientation in a near-alpha titanium alloy billet[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,712:179-184.
APA	Zhao, Z. B.,Wang, Q. J.,Liu, J. R.,Yang, R.,&Wang, QJ .(2017).Characterizations of microstructure and crystallographic orientation in a near-alpha titanium alloy billet.JOURNAL OF ALLOYS AND COMPOUNDS,712,179-184.
MLA	Zhao, Z. B.,et al."Characterizations of microstructure and crystallographic orientation in a near-alpha titanium alloy billet".JOURNAL OF ALLOYS AND COMPOUNDS 712(2017):179-184.