Effect of Strain Rate on the Mechanical Properties of Cu/Ni Clad Foils

The performance of clad foils in microforming deserves to be studied extensively, where the strain rate sensitivity of the clad foil concerning the forming performance is a crucial factor. In this paper, the strain rate sensitivity of the mechanical properties of coarse-grained (CG) Cu/Ni clad foils...

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Autores principales:	Haiyang Wang, Chuanjie Wang, Linfu Zhang, Gang Chen, Qiang Zhu, Peng Zhang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Cu/Ni clad foil strain rate sensitivity microforming Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/2cbf06769d8245c681307b32bb891f0f
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spelling	oai:doaj.org-article:2cbf06769d8245c681307b32bb891f0f2021-11-25T18:14:05ZEffect of Strain Rate on the Mechanical Properties of Cu/Ni Clad Foils10.3390/ma142268461996-1944https://doaj.org/article/2cbf06769d8245c681307b32bb891f0f2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6846https://doaj.org/toc/1996-1944The performance of clad foils in microforming deserves to be studied extensively, where the strain rate sensitivity of the clad foil concerning the forming performance is a crucial factor. In this paper, the strain rate sensitivity of the mechanical properties of coarse-grained (CG) Cu/Ni clad foils in the quasi-static strain rate range (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mover accent="true"><mi>ε</mi><mo>˙</mo></mover><mo>=</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>4</mn></mrow></msup><mo> </mo><msup><mi mathvariant="normal">s</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup><mo>~</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>1</mn><mtext> </mtext></mrow></msup><msup><mi mathvariant="normal">s</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></semantics></math></inline-formula>) is explored by uniaxial tensile tests under different strain rates. The results show that the strength and ductility increase with strain rate, and the strain rate sensitivity <i>m</i> value is in the range of 0.012~0.015, which is three times the value of m for CG pure Cu. The fracture morphology shows that slip bands with different directions are entangled in localized areas near the interface layer. Molecular dynamics simulations demonstrate the formation of many edged dislocations at the Cu/Ni clad foils interface due to a mismatch interface. The improved ductility and strain rate sensitivity is attributed to the interaction and plugging of the edged dislocations with high density in the interface layer. Additionally, the influence of size effect on mechanical properties is consistently present in the quasi-static strain rate range. This paper helps to understand the strain rate sensitivity of CG clad foils and to develop clad foils in microforming processes.Haiyang WangChuanjie WangLinfu ZhangGang ChenQiang ZhuPeng ZhangMDPI AGarticleCu/Ni clad foilstrain rate sensitivitymicroformingTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6846, p 6846 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Cu/Ni clad foil strain rate sensitivity microforming Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	Cu/Ni clad foil strain rate sensitivity microforming Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Haiyang Wang Chuanjie Wang Linfu Zhang Gang Chen Qiang Zhu Peng Zhang Effect of Strain Rate on the Mechanical Properties of Cu/Ni Clad Foils
description	The performance of clad foils in microforming deserves to be studied extensively, where the strain rate sensitivity of the clad foil concerning the forming performance is a crucial factor. In this paper, the strain rate sensitivity of the mechanical properties of coarse-grained (CG) Cu/Ni clad foils in the quasi-static strain rate range (<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mover accent="true"><mi>ε</mi><mo>˙</mo></mover><mo>=</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>4</mn></mrow></msup><mo> </mo><msup><mi mathvariant="normal">s</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup><mo>~</mo><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>1</mn><mtext> </mtext></mrow></msup><msup><mi mathvariant="normal">s</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></mrow></semantics></math></inline-formula>) is explored by uniaxial tensile tests under different strain rates. The results show that the strength and ductility increase with strain rate, and the strain rate sensitivity <i>m</i> value is in the range of 0.012~0.015, which is three times the value of m for CG pure Cu. The fracture morphology shows that slip bands with different directions are entangled in localized areas near the interface layer. Molecular dynamics simulations demonstrate the formation of many edged dislocations at the Cu/Ni clad foils interface due to a mismatch interface. The improved ductility and strain rate sensitivity is attributed to the interaction and plugging of the edged dislocations with high density in the interface layer. Additionally, the influence of size effect on mechanical properties is consistently present in the quasi-static strain rate range. This paper helps to understand the strain rate sensitivity of CG clad foils and to develop clad foils in microforming processes.
format	article
author	Haiyang Wang Chuanjie Wang Linfu Zhang Gang Chen Qiang Zhu Peng Zhang
author_facet	Haiyang Wang Chuanjie Wang Linfu Zhang Gang Chen Qiang Zhu Peng Zhang
author_sort	Haiyang Wang
title	Effect of Strain Rate on the Mechanical Properties of Cu/Ni Clad Foils
title_short	Effect of Strain Rate on the Mechanical Properties of Cu/Ni Clad Foils
title_full	Effect of Strain Rate on the Mechanical Properties of Cu/Ni Clad Foils
title_fullStr	Effect of Strain Rate on the Mechanical Properties of Cu/Ni Clad Foils
title_full_unstemmed	Effect of Strain Rate on the Mechanical Properties of Cu/Ni Clad Foils
title_sort	effect of strain rate on the mechanical properties of cu/ni clad foils
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/2cbf06769d8245c681307b32bb891f0f
work_keys_str_mv	AT haiyangwang effectofstrainrateonthemechanicalpropertiesofcunicladfoils AT chuanjiewang effectofstrainrateonthemechanicalpropertiesofcunicladfoils AT linfuzhang effectofstrainrateonthemechanicalpropertiesofcunicladfoils AT gangchen effectofstrainrateonthemechanicalpropertiesofcunicladfoils AT qiangzhu effectofstrainrateonthemechanicalpropertiesofcunicladfoils AT pengzhang effectofstrainrateonthemechanicalpropertiesofcunicladfoils
_version_	1718411427333537792

Effect of Strain Rate on the Mechanical Properties of Cu/Ni Clad Foils

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