Effect of strain rate on mechanical properties of Cu/Ni multilayered composites processed by electrodeposition

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:726

Article

Fu, Zhengrong¹  Zhang, Zheng¹  Meng, Lifang¹  Shu, Baipo¹  Zhu, Yuntian^2,3  Zhu, Xinkun¹ 

[1] Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Yunnan, Peoples R China

[2] North Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA

[3] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Jiangsu, Peoples R China

关键词: Multilayered composite;    Strain rate;    Strength;    Ductility;   

DOI  :  10.1016/j.msea.2018.04.076

来源: Elsevier

【 摘 要 】

Mechanical properties of Cu/Ni multilayered composites processed by electrodeposition were investigated by tensile tests at different strain rates in the range of 5 x 10(-5) to 5 x 10(-2) s(-1) at room temperature. With increasing strain rates, the strength and ductility of Cu/Ni multilayered composites increased simultaneously, while their strain rate sensitivity also increased, which is very different from the constituent pure Cu and Ni. The back-stress caused by the Cu/Ni layer interfaces also increased with strain rate. Strong back-stress work hardening is observed, which is the main reason for the observed good ductility.

【 授权许可】

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