Synergistic deformation mechanisms in Cu–Fe layered materials: a strain gradient plasticity finite element analysis

The hetero-zone boundary affected region (HBAR), with a high strain gradient, plays a crucial role in the synergistic deformation of layered materials. Our previous experimental study demonstrated that a decreasing interfacial spacing leads to a higher fraction of HBAR and an enhanced combination of...

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Main Authors: Ran, Hao, Su, Wuli, Ye, Peihao, Chen, Xue, Zhang, Chao, Cheng, Qian, Wang, Qingyuan, Lu, Xiaochong, Huang, Chongxiang
Other Authors: School of Mechanical and Aerospace Engineering
Format: Article
Language:English
Published: 2024
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Online Access:https://hdl.handle.net/10356/178400
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1784002024-06-18T05:12:00Z Synergistic deformation mechanisms in Cu–Fe layered materials: a strain gradient plasticity finite element analysis Ran, Hao Su, Wuli Ye, Peihao Chen, Xue Zhang, Chao Cheng, Qian Wang, Qingyuan Lu, Xiaochong Huang, Chongxiang School of Mechanical and Aerospace Engineering Engineering Layered material Conventional mechanism-based strain gradient The hetero-zone boundary affected region (HBAR), with a high strain gradient, plays a crucial role in the synergistic deformation of layered materials. Our previous experimental study demonstrated that a decreasing interfacial spacing leads to a higher fraction of HBAR and an enhanced combination of strength and ductility. In this work, a conventional mechanism-based strain gradient (CMSG) plasticity model is adopted to simulate the tensile behavior of Cu–Fe layered materials with three different interfacial spacings. The simulation results indicated that strain/stress partitioning and strain banding are the main factors for the synergistic deformation behavior. Strain bands are more likely to be activated in the Cu–Fe layered materials with smaller interfacial spacing. In addition, the formation of HBAR near the layer boundary can be observed, consistent with the previous experiments. During deformation, the HBAR induces back stress and forward stress to strengthen the Cu layer and weaken the Fe layer, respectively. The simulation results indicate the stress transfer between the Cu and Fe layers, which benefits the strain hardening and enhances synergistic deformation. This study provides a valuable insight into the strength-ductility synergy of layered materials. It demonstrates that increasing the HBAR fraction is a viable approach to enhance the mechanical properties of hetero-structured materials. Published version This work was supported by the National Natural Science Foundation of China (Nos. 51931003, 92263201, 12302280), the Fundamental Research Funds for the Central Universities (2022SCU12094), the project funded by China Postdoctoral Science Foundation (2022M722253), and the Postdoctoral joint training program of Sichuan University (SCDXLHPY2308). 2024-06-18T05:12:00Z 2024-06-18T05:12:00Z 2024 Journal Article Ran, H., Su, W., Ye, P., Chen, X., Zhang, C., Cheng, Q., Wang, Q., Lu, X. & Huang, C. (2024). Synergistic deformation mechanisms in Cu–Fe layered materials: a strain gradient plasticity finite element analysis. Journal of Materials Research and Technology, 29, 5000-5009. https://dx.doi.org/10.1016/j.jmrt.2024.02.207 2238-7854 https://hdl.handle.net/10356/178400 10.1016/j.jmrt.2024.02.207 2-s2.0-85186677884 29 5000 5009 en Journal of Materials Research and Technology © 2024 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/bync-nd/4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering
Layered material
Conventional mechanism-based strain gradient
spellingShingle Engineering
Layered material
Conventional mechanism-based strain gradient
Ran, Hao
Su, Wuli
Ye, Peihao
Chen, Xue
Zhang, Chao
Cheng, Qian
Wang, Qingyuan
Lu, Xiaochong
Huang, Chongxiang
Synergistic deformation mechanisms in Cu–Fe layered materials: a strain gradient plasticity finite element analysis
description The hetero-zone boundary affected region (HBAR), with a high strain gradient, plays a crucial role in the synergistic deformation of layered materials. Our previous experimental study demonstrated that a decreasing interfacial spacing leads to a higher fraction of HBAR and an enhanced combination of strength and ductility. In this work, a conventional mechanism-based strain gradient (CMSG) plasticity model is adopted to simulate the tensile behavior of Cu–Fe layered materials with three different interfacial spacings. The simulation results indicated that strain/stress partitioning and strain banding are the main factors for the synergistic deformation behavior. Strain bands are more likely to be activated in the Cu–Fe layered materials with smaller interfacial spacing. In addition, the formation of HBAR near the layer boundary can be observed, consistent with the previous experiments. During deformation, the HBAR induces back stress and forward stress to strengthen the Cu layer and weaken the Fe layer, respectively. The simulation results indicate the stress transfer between the Cu and Fe layers, which benefits the strain hardening and enhances synergistic deformation. This study provides a valuable insight into the strength-ductility synergy of layered materials. It demonstrates that increasing the HBAR fraction is a viable approach to enhance the mechanical properties of hetero-structured materials.
author2 School of Mechanical and Aerospace Engineering
author_facet School of Mechanical and Aerospace Engineering
Ran, Hao
Su, Wuli
Ye, Peihao
Chen, Xue
Zhang, Chao
Cheng, Qian
Wang, Qingyuan
Lu, Xiaochong
Huang, Chongxiang
format Article
author Ran, Hao
Su, Wuli
Ye, Peihao
Chen, Xue
Zhang, Chao
Cheng, Qian
Wang, Qingyuan
Lu, Xiaochong
Huang, Chongxiang
author_sort Ran, Hao
title Synergistic deformation mechanisms in Cu–Fe layered materials: a strain gradient plasticity finite element analysis
title_short Synergistic deformation mechanisms in Cu–Fe layered materials: a strain gradient plasticity finite element analysis
title_full Synergistic deformation mechanisms in Cu–Fe layered materials: a strain gradient plasticity finite element analysis
title_fullStr Synergistic deformation mechanisms in Cu–Fe layered materials: a strain gradient plasticity finite element analysis
title_full_unstemmed Synergistic deformation mechanisms in Cu–Fe layered materials: a strain gradient plasticity finite element analysis
title_sort synergistic deformation mechanisms in cu–fe layered materials: a strain gradient plasticity finite element analysis
publishDate 2024
url https://hdl.handle.net/10356/178400
_version_ 1806059927565762560