Hierarchical strain band formation and mechanical behavior of a heterostructured dual-phase material
文献类型：期刊论文
| 作者 | Li, Zhongkai4; Liu, Yujie4; Wang, Yanfei1; Hu, Jun5; Xu, Lei3; Wang, Jianjun4; Liu, Chunming4; Zhu, Yuntian2 |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 162页码:25-37 |
| 关键词 | Heterostructured materials Strain bands Strain gradient Hetero-deformation induced hardening |
| ISSN号 | 1005-0302 |
| DOI | 10.1016/j.jmst.2023.02.055 |
| 通讯作者 | Li, Zhongkai(danielli@stumail.neu.edu.cn) ; Zhu, Yuntian(yuntizhu@cityu.edu.hk) |
| 英文摘要 | 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. |
| 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:001009482500001 |
| 出版者 | JOURNAL MATER SCI TECHNOL |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Hong Kong Research Grants Council |
| 源URL | [http://ir.imr.ac.cn/handle/321006/178243]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Li, Zhongkai; Zhu, Yuntian |
| 作者单位 | 1.Peking Univ, Coll Engn, Dept Mech & Engn Sci, Beijing 100871, Peoples R China 2.City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 4.Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China 5.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, 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. |
入库方式： OAI收割
来源：金属研究所
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