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Capacity and mechanisms of plastic deformation in beta-Lu2Si2O7
Tian, Zhilin; Zheng, Liya; Wang, Jiemin; Wang, Jingyang; Wang, JY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
2017-04-01
Source PublicationSCRIPTA MATERIALIA
ISSN1359-6462
Volume131Pages:6-10
AbstractRE2Si2O7 disilicates are promising candidates for oxidation resistant interfacial phase in SiC fiber-reinforced SiC matrix composites due to their good damage tolerance, good phase stability and compatible thermal expansion coefficients with SiC. We herein investigate the capacity and mechanisms of plastic deformation in beta-Lu2Si2O7 by a combination of Hertzian indentation experiment and transmission electron microscopy observation. A large amount of (11 0) deformation twinning, dislocations and slip bands are observed. For the common twinning mode, fewer atomic shuffle types, small shear strain, and low shear modulus in the twinning direction help explain the prevalence of this mode. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.; RE2Si2O7 disilicates are promising candidates for oxidation resistant interfacial phase in SiC fiber-reinforced SiC matrix composites due to their good damage tolerance, good phase stability and compatible thermal expansion coefficients with SiC. We herein investigate the capacity and mechanisms of plastic deformation in beta-Lu2Si2O7 by a combination of Hertzian indentation experiment and transmission electron microscopy observation. A large amount of (11 0) deformation twinning, dislocations and slip bands are observed. For the common twinning mode, fewer atomic shuffle types, small shear strain, and low shear modulus in the twinning direction help explain the prevalence of this mode. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
description.department[tian, zhilin ; zheng, liya ; wang, jiemin ; wang, jingyang] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [tian, zhilin] univ chinese acad sci, beijing 100049, peoples r china
KeywordRare Earth Silicates Fiber-matrix Interphase Deformation Mechanism
Subject AreaNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China [5137225, 51402311]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78214
Collection中国科学院金属研究所
Corresponding AuthorWang, JY (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Tian, Zhilin,Zheng, Liya,Wang, Jiemin,et al. Capacity and mechanisms of plastic deformation in beta-Lu2Si2O7[J]. SCRIPTA MATERIALIA,2017,131:6-10.
APA Tian, Zhilin,Zheng, Liya,Wang, Jiemin,Wang, Jingyang,&Wang, JY .(2017).Capacity and mechanisms of plastic deformation in beta-Lu2Si2O7.SCRIPTA MATERIALIA,131,6-10.
MLA Tian, Zhilin,et al."Capacity and mechanisms of plastic deformation in beta-Lu2Si2O7".SCRIPTA MATERIALIA 131(2017):6-10.
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