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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
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
ISSN0925-8388
Volume712Pages:179-184
AbstractPrevious 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.
description.department[zhao, z. b. ; wang, q. j. ; liu, j. r. ; yang, r.] chinese acad sci, inst met res, shenyang 110016, peoples r china
KeywordTitanium Alloys Microstructure Texture Globularization Ebsd
Subject AreaChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78035
Collection中国科学院金属研究所
Corresponding AuthorWang, QJ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
Recommended Citation
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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