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

被引：30

作者：

Cao, Zheng ^{[1
,2
]}

Cheng, Zhao ^{[1
]}

Xu, Wei ^{[3
]}

Lu, Lei ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China

[3] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2022年 / 103卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Laminated Cu; Cu alloys; Work hardening; Strengthening; Interfacial affected zone; Strain localization; STRAIN GRADIENT PLASTICITY; MECHANICAL-PROPERTIES; DUCTILITY; DEFORMATION; DELOCALIZATION;

D O I：

10.1016/j.jmst.2021.06.043

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To clarify the work hardening discrepancy effect on the strengthening of laminated metals, we designed 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 attributed to more geometrically necessary dislocations accumulated at interfaces and severer strain localization due to the larger work hardening discrepancy. ?? 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

引用

页码：67 / 72

页数：6

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