Hierarchical strain band formation and mechanical behavior of a heterostructured dual-phase material

doi:10.1016/j.jmst.2023.02.055

IMR OpenIR

	Hierarchical strain band formation and mechanical behavior of a heterostructured dual-phase material
	Li, Zhongkai 1; Liu, Yujie 1; Wang, Yanfei 2; Hu, Jun 3; Xu, Lei 4; Wang, Jianjun 1; Liu, Chunming 1; Zhu, Yuntian 5
通讯作者	Li, Zhongkai(danielli@stumail.neu.edu.cn) ; Zhu, Yuntian(yuntizhu@cityu.edu.hk)
	2023-11-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	162 页码:25-37
摘要	Dispersive strain bands have been reported as a characteristic deformation feature of heterostructured materials, which helps to improve ductility. However, their formation mechanism is still not well un-derstood. Here we report the formation of dispersed strain bands through dual-level hierarchical strain banding and its effect on the mechanical behavior of a heterostructured Fe-40Cu model material. Specif-ically, deformation started by the formation and propagation of dispersed microscale strain bands in the heterostructured Fe-40Cu material. High strain gradient was generated within the microscale strain bands during their propagation and was accommodated by the accumulation of geometrically necessary disloca-tions (GNDs). The dispersed microscale strain bands were not uniformly distributed, but instead grouped together to form macroscale strain bands that were uniformly distributed over the entire gage section to accommodate the majority of the applied strain. The formation of this dual-level hierarchical strain bands prevented the formation of large strain localization to fail the sample prematurely. It was also found that increasing the strain hardening capacity of soft copper zones provides more room for the accumulation of GNDs, resulting in higher constraint to microscale strain band propagation and consequently higher duc-tility. These observations suggest the possibility of tailoring microscale strain bands to optimize tensile performance of heterostructured materials.(c) 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Heterostructured materials Strain bands Strain gradient Hetero-deformation induced hardening
资助者	National Key R&D Program of China ; National Natural Science Foundation of China ; Hong Kong Research Grants Council
DOI	10.1016/j.jmst.2023.02.055
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2021YFA1200202] ; National Natural Science Foundation of China[51931003] ; Hong Kong Research Grants Council[GRF 11214121]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001009482500001
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/178244
专题	中国科学院金属研究所
通讯作者	Li, Zhongkai; Zhu, Yuntian
作者单位	1.Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China 2.Peking Univ, Coll Engn, Dept Mech & Engn Sci, Beijing 100871, Peoples R China 3.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 5.City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhongkai,Liu, Yujie,Wang, Yanfei,et al. Hierarchical strain band formation and mechanical behavior of a heterostructured dual-phase material[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2023,162:25-37.
APA	Li, Zhongkai.,Liu, Yujie.,Wang, Yanfei.,Hu, Jun.,Xu, Lei.,...&Zhu, Yuntian.(2023).Hierarchical strain band formation and mechanical behavior of a heterostructured dual-phase material.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,162,25-37.
MLA	Li, Zhongkai,et al."Hierarchical strain band formation and mechanical behavior of a heterostructured dual-phase material".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 162(2023):25-37.