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Deformation induced twinning and phase transition in an interstitial intermetallic compound niobium boride

文献类型：期刊论文

作者Jiang, Binbin1,2; Chen, Chunjin1,3; Wang, Xuelu1,3; Wang, Hao4; Wang, Weizhen1,5; Ye, Hengqiang1; Du, Kui1
刊名ACTA MATERIALIA
出版日期2019-02-15
卷号165页码:459-470
关键词Twinning Phase transition Stacking faults Interstitial compound Scanning transmission electron microscopy
ISSN号1359-6454
DOI10.1016/j.actamat.2018.12.011
通讯作者Du, Kui(kuidu@imr.ac.cn)
英文摘要Interstitial compounds are widely used to improve stiffness, modulus, strength and wear resistance of alloys owing to their high strength and stiffness. Understanding defect evolution and phase transformation processes in interstitial compounds during deformation would therefore provide important guidance for further enhancement of alloy properties. Here, we observed and analyzed the various deformation-induced defects in an NbB crystal using aberration-corrected electron microscopy combined with density functional theory simulations. We identified stable defects such as stacking faults and deformation twins on {110} planes, and (020)[101] planar faults. The stability originates from preservation of the dodecahedron building blocks and B-B covalent bonds. In contrast for the case of (020)[100] planer faults, the crystal structure at planar faults is significantly altered and the B-B bonds are broken, resulting in a deformation-induced phase transition from NbB to Nb phase. These results provide insights on the deformation processes of complex interstitial compounds in general. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
资助项目National Natural Science Foundation of China[51521091] ; National Natural Science Foundation of China[51771203] ; Chinese Academy of Sciences[QYZDJ-SSW-JSC024] ; National Key Research and Development Program of China[2017YFA0700701]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:000457665100041
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Natural Science Foundation of China ; Chinese Academy of Sciences ; National Key Research and Development Program of China
源URL[http://ir.imr.ac.cn/handle/321006/131757]  
专题金属研究所_中国科学院金属研究所
通讯作者Du, Kui
作者单位1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei, Anhui, Peoples R China
4.Chinese Acad Sci, Inst Met Res, Div Titanium Alloys, Shenyang 110016, Peoples R China
5.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China
推荐引用方式
GB/T 7714		 Jiang, Binbin,Chen, Chunjin,Wang, Xuelu,et al. Deformation induced twinning and phase transition in an interstitial intermetallic compound niobium boride[J]. ACTA MATERIALIA,2019,165:459-470.
APA Jiang, Binbin.,Chen, Chunjin.,Wang, Xuelu.,Wang, Hao.,Wang, Weizhen.,...&Du, Kui.(2019).Deformation induced twinning and phase transition in an interstitial intermetallic compound niobium boride.ACTA MATERIALIA,165,459-470.
MLA Jiang, Binbin,et al."Deformation induced twinning and phase transition in an interstitial intermetallic compound niobium boride".ACTA MATERIALIA 165(2019):459-470.

入库方式： OAI收割

来源：金属研究所

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