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Deformation induced twinning and phase transition in an interstitial intermetallic compound niobium boride
Jiang, Binbin; Chen, Chunjin; Wang, Xuelu; Wang, Hao; Wang, Weizhen; Ye, Hengqiang; Du, Kui
2019-02-15
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume165Pages:459-470
AbstractInterstitial 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.
KeywordTwinning Phase transition Stacking faults Interstitial compound Scanning transmission electron microscopy
Indexed BySCI
Language英语
WOS IDWOS:000457665100041
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81366
Collection中国科学院金属研究所
Recommended Citation
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.
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