Analysis of local crystallographic orientation in an annealed Ti60 billet

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英文篇名：Analysis of local crystallographic orientation in an annealed Ti60 billet 作者：Z.B.Zhao ; Z.Liu ; Q.J.Wang ; J.R.Liu ; R.Yang 英文作者：Z.B.Zhao;Z.Liu;Q.J.Wang;J.R.Liu;R.Yang;Institute of Metal Research,Chinese Academy of Sciences;School of Materials Science and Engineering,University of Science and Technology of China; 英文关键词：Titanium alloys;;Microstructure;;Texture;;Heat treatment;;EBSD 中文刊名：CLKJ 英文刊名：材料科学技术(英文版) 机构：Institute of Metal Research,Chinese Academy of Sciences;School of Materials Science and Engineering,University of Science and Technology of China; 出版日期：2019-04-15 出版单位：Journal of Materials Science & Technology 年：2019 期：v.35 语种：英文; 页：CLKJ201904016 页数：5 CN：04 ISSN：21-1315/TG 分类号：129-133

摘要

A heterogeneous microstructure in terms of local orientation distribution is often found in near-α titanium alloys. The presence of large regions with similar crystallographic orientation, called ‘macrozones',could drastically decrease the fatigue performance of titanium alloys. The present work reports on the crystallographic orientation of a near-α titanium alloy, Ti60, billet after annealing in an α+β phase field.The texture was found to be weak, and no obvious macrozone was found in our measured zone where the variant selection is suppressed. Meanwhile, in-depth electron backscattered diffraction(EBSD) analysis was applied to evaluate the final microstructure, and the mechanisms by which they formed were analyzed.
        A heterogeneous microstructure in terms of local orientation distribution is often found in near-α titanium alloys. The presence of large regions with similar crystallographic orientation, called ‘macrozones',could drastically decrease the fatigue performance of titanium alloys. The present work reports on the crystallographic orientation of a near-α titanium alloy, Ti60, billet after annealing in an α+β phase field.The texture was found to be weak, and no obvious macrozone was found in our measured zone where the variant selection is suppressed. Meanwhile, in-depth electron backscattered diffraction(EBSD) analysis was applied to evaluate the final microstructure, and the mechanisms by which they formed were analyzed.

引文

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