Effect of work hardening discrepancy on strengthening of laminated Cu/CuZn alloys

Zheng Cao ¹Zhao Cheng ²Wei Xu ³Lei Lu²

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作者信息

1. Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China
2. Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China
3. The State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China
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Abstract

To clarify the work hardening discrepancy effect on the strengthening of laminated metals,we de-signed two laminated Cu/Cu4Zn and Cu/Cu32Zn samples with different layer thicknesses.Cu/Cu4Zn has larger work hardening discrepancy between two constituent layers relative to Cu/Cu32Zn,but the yield strengths of two CuZn constituents are comparable.Uniaxial tensile results suggest Cu/Cu4Zn with larger work hardening discrepancy exhibits a significant strengthening at early deformation stage while Cu/Cu32Zn possesses a better ductility.The underlying mechanisms for the strengthening effect are at-tributed to more geometrically necessary dislocations accumulated at interfaces and severer strain local-ization due to the larger work hardening discrepancy.

Key words

Laminated Cu/Cu alloys/Work hardening/Strengthening/Interfacial affected zone/Strain localization

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基金项目

National Nat-ural Science Foundation of China(U1608257)

National Nat-ural Science Foundation of China(51931010)

Key Research Program of Frontier Science and International Partnership Program(GJHZ2029)

CAS,LiaoNing Revitalization Talents Program(XLYC1802026)

he National Natural Science Foundatiosn of China(52001312)

Project Funded by China Postdoctoral Science Foundation(BX20190336)

Project Funded by China Postdoctoral Science Foundation(2019M661150)

Open Research Fund from the State Key Laboratory of Rolling and Au-tomation,Northeastern University(2018RALKFKT002)

出版年

2022

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量28

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