Anisotropic strengthening of nanotwin bundles in heterogeneous nanostructured Cu: Effect of deformation compatibility

doi:10.1016/j.actamat.2021.116830

CORC > 金属研究所 > 中国科学院金属研究所

	Anisotropic strengthening of nanotwin bundles in heterogeneous nanostructured Cu: Effect of deformation compatibility
	Zhao, H. Z.1,2; You, Z. S.3; Tao, N. R.1; Lu, L.1
刊名	ACTA MATERIALIA
	2021-05-15
卷号	210 页码:10
关键词	Heterogeneous nanostructure Anisotropic deformation Nanotwins Strain partitioning Deformation compatibility
ISSN号	1359-6454
DOI	10.1016/j.actamat.2021.116830
通讯作者	Lu, L.(llu@imr.ac.cn)
英文摘要	Anisotropic tensile behaviors of a heterogeneous nanostructured Cu composed of isotropic nanograin ma-trix and anisotropic nanotwin bundles were investigated under loading directions parallel, normal, and 45 degrees inclined to the twin boundaries (TBs). Distinct from the anisotropic strengthening effect in the ho-mogeneous nanotwinned (NT) counterpart, the heterostructure exhibits the highest strength under paral-lel tension, and moderate strength under normal tension. High-resolution digital image correlation anal-ysis indicated an orientation-dependent deformation compatibility between the nanotwin bundles and nanograin matrix, i.e., compatible deformation in the parallel orientation; but significant incompatibility in orientations both normal and 45 degrees inclined to TBs. The results reveal that the strengthening effect of nanotwins in heterogeneous nanostructure is not only dependent on the strength of themselves, but also influenced by the deformation compatibility with surrounding components. The orientation-dependent deformation compatibility was attributed to the interactions between isotropic shear bands in nanograin matrix and anisotropic deformation in nanotwin bundles. (c) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
资助项目	National Science Foundation of China (NSFC)[U1608257] ; National Science Foundation of China (NSFC)[51931010] ; Key Research Program of Frontier Science and International partnership program, CAS[GJHZ2029] ; LiaoNing Revitalization Talents Program[XLYC1802026] ; National Key R&D Program of China[2017YFA0204403]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000649655000005
资助机构	National Science Foundation of China (NSFC) ; Key Research Program of Frontier Science and International partnership program, CAS ; LiaoNing Revitalization Talents Program ; National Key R&D Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/161171]
专题	金属研究所_中国科学院金属研究所
通讯作者	Lu, L.
作者单位	1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Nanjing Univ Sci & Technol, Herbert Gleiter Inst Nanosci, Nanjing 210094, Peoples R China
推荐引用方式 GB/T 7714	Zhao, H. Z.,You, Z. S.,Tao, N. R.,et al. Anisotropic strengthening of nanotwin bundles in heterogeneous nanostructured Cu: Effect of deformation compatibility[J]. ACTA MATERIALIA,2021,210:10.
APA	Zhao, H. Z.,You, Z. S.,Tao, N. R.,&Lu, L..(2021).Anisotropic strengthening of nanotwin bundles in heterogeneous nanostructured Cu: Effect of deformation compatibility.ACTA MATERIALIA,210,10.
MLA	Zhao, H. Z.,et al."Anisotropic strengthening of nanotwin bundles in heterogeneous nanostructured Cu: Effect of deformation compatibility".ACTA MATERIALIA 210(2021):10.