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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
ISSN0925-8388
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
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.
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