Dynamic recrystallization initiated by direct grain reorientation at high-angle grain boundary in α-titanium

Wang Hao; Bao Qili L.; Zhou Gang; Qiu J. K.; Yang Yi; Ma Y. J.; Bai Chunguang G.; Xu Dongsheng S.; Rugg David; Huang Aijun J.; Hu Qing-Miao; Lei J. F.; Yang Rui

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Dynamic recrystallization initiated by direct grain reorientation at high-angle grain boundary in α-titanium

机译：通过α-钛的大角晶界直接晶粒重结晶发起的动态重结晶

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Employing atomic-scale simulations, the response of a high-angle grain boundary (GB), the soft/hard GB, against external loading was systematically investigated. Under tensile loading close to the hard orientation, strain-induced dynamic recrystallization was observed to initiate through direct soft-to-hard grain reorientation, which was triggered by stress mismatch, inhibited by surface tension from the soft-hard GB, and proceeded by interface ledges. Such grain reorientation corresponds with expansion and contraction of the hard grain along and perpendicular to the loading direction, respectively, accompanied by local atomic shuffling, providing relatively large normal strain of 8.3% with activation energy of 0.04 eV per atom. Tensile strain and residual dislocations on the hard/soft GB facilitate the initiation of dynamic recrystallization by lowering the energy barrier and the critical stress for grain reorientation, respectively.

机译：采用原子尺度模拟，系统地研究了高角度晶界（GB），软/硬GB对外部载荷的响应。在紧密取向的拉伸载荷下，观察应变诱导的动态重结晶通过直接软态晶粒重结晶引发，通过抑制来自软硬GB的表面张力抑制的应力失配，并通过界面进行抑制。壁架。这种晶粒重构分别对应于沿着局部原子洗片的硬颗粒的膨胀和垂直于加载方向的膨胀和收缩，从局部原子洗涤，每次原子的激活能量为0.04eV的相对大的正常菌株。硬/软GB上的拉伸应变和残留脱位促进了通过降低能量屏障和晶粒重构的临界应力来启动动态再结晶。

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来源
《Journal of Materials Research》 |2019年第9期|1608-1621|共14页
作者
Wang Hao; Bao Qili L.; Zhou Gang; Qiu J. K.; Yang Yi; Ma Y. J.; Bai Chunguang G.; Xu Dongsheng S.; Rugg David; Huang Aijun J.; Hu Qing-Miao; Lei J. F.; Yang Rui;
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作者单位

Chinese Acad Sci Inst Met Res Shenyang 110016 Liaoning Peoples R China|Univ Sci & Technol China Sch Mat Sci & Engn Shenyang 110016 Liaoning Peoples R China;

Chinese Acad Sci Inst Met Res Shenyang 110016 Liaoning Peoples R China|Univ Sci & Technol China Sch Mat Sci & Engn Shenyang 110016 Liaoning Peoples R China;

Chinese Acad Sci Inst Met Res Shenyang 110016 Liaoning Peoples R China|Univ Sci & Technol China Sch Mat Sci & Engn Shenyang 110016 Liaoning Peoples R China;

Chinese Acad Sci Inst Met Res Shenyang 110016 Liaoning Peoples R China|Univ Sci & Technol China Sch Mat Sci & Engn Shenyang 110016 Liaoning Peoples R China;

Univ Shanghai Sci & Technol Shanghai 200093 Peoples R China;

Chinese Acad Sci Inst Met Res Shenyang 110016 Liaoning Peoples R China|Univ Sci & Technol China Sch Mat Sci & Engn Shenyang 110016 Liaoning Peoples R China;

Chinese Acad Sci Inst Met Res Shenyang 110016 Liaoning Peoples R China|Univ Sci & Technol China Sch Mat Sci & Engn Shenyang 110016 Liaoning Peoples R China;

Chinese Acad Sci Inst Met Res Shenyang 110016 Liaoning Peoples R China|Univ Sci & Technol China Sch Mat Sci & Engn Shenyang 110016 Liaoning Peoples R China;

Rolls Royce PLC Derby DE24 8BJ England;

Univ Shanghai Sci & Technol Shanghai 200093 Peoples R China;

Chinese Acad Sci Inst Met Res Shenyang 110016 Liaoning Peoples R China|Univ Sci & Technol China Sch Mat Sci & Engn Shenyang 110016 Liaoning Peoples R China;

Chinese Acad Sci Inst Met Res Shenyang 110016 Liaoning Peoples R China|Univ Sci & Technol China Sch Mat Sci & Engn Shenyang 110016 Liaoning Peoples R China;

Chinese Acad Sci Inst Met Res Shenyang 110016 Liaoning Peoples R China|Univ Sci & Technol China Sch Mat Sci & Engn Shenyang 110016 Liaoning Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类
关键词
plastic deformation; grain boundary; recrystallization; reorientation; atomistic simulation;

机译：塑料变形;晶界;重结晶;重新定位;原子模拟;

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专利

1. Dynamic recrystallization initiated by direct grain reorientation at high-angle grain boundary in α-titanium [J] . Wang Hao, Bao Qili L., Zhou Gang, Journal of Materials Research . 2019,第9期

机译：通过在α-钛中高角度晶界处直接晶粒重新定向引发的动态再结晶
2. Crystallographic orientations of high-angle grain boundaries in dynamically recrystallized quartz: First results [J] . Kuntcheva B, Kruhl JH, Kunze K Tectonophysics: International Journal of Geotectonics and the Geology and Physics of the Interior of the Earth . 2006,第3a4期

机译：动态再结晶石英中高角度晶界的晶体学取向：第一个结果
3. Analysis of the reference structure adopted by a mixed tilt-twist vicinal high-angle grain boundary in titanium [J] . MacLaren I, Aindow M Philosophical Magazine, A. Physics of condensed matter, defects and mechanical properties . 1997,第4期

机译：钛混合倾斜扭曲邻域高角度晶界采用的参考结构分析
4. Grain Boundary-Mediated Lattice Reorientation in α-Titanium to Promote Plastic Deformation in Hard-Oriented Grains [C] . Hao Wang, Gang Zhou, Jianke Qiu World Conference on Titanium . 2016

机译：α-钛的晶粒边界介导的晶格重新定位，以促进硬化颗粒中的塑性变形
5. DISLOCATION REACTIONS AT GRAIN BOUNDARIES AND THEIR ROLE IN THE MECHANICAL BEHAVIOR OF CRYSTALLINE INTERFACES (SLIP CONTINUITY, INTERGRANULAR CAVITATION, BOUNDARY MIGRATION, DYNAMIC RECRYSTALLIZATION, LOW-CYCLE FATIGUE) [D] . LIM, LEONG-CHEW. 1985

机译：晶界的脱位反应及其在晶体界面的力学行为中的作用（滑动连续性，晶间空化，边界迁移，动态再结晶，低循环疲劳）
6. Latent Order in High-Angle Grain Boundary of GaN [O] . Sangmoon Yoon, Hyobin Yoo, Seoung-Hun Kang, -1

机译：GaN高角度晶界中的潜在序
7. Relationship between Texture and Grain Boundary Character Distribution in Recrystallized Pure Titanium [O] . Kyosuke Yoshimi, Yonosuke Murayama, Shuji Hanada, 1990

机译：重结晶纯钛中纹理与晶界性状分布的关系
8. Modeling Grain Boundary Mobility During Dynamic Recrystallization of Metallic Alloys (Preprint) [R] . Semiatin, S., Montheillet, F., Damamme, G., 2009

机译：金属合金动态再结晶过程中晶界迁移率的模拟（预印）

Dynamic recrystallization initiated by direct grain reorientation at high-angle grain boundary in α-titanium

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