Effect of strain rate on mechanical properties of Cu/Ni multilayered composites processed by electrodeposition
Effect of strain rate on mechanical properties of Cu/Ni multilayered composites processed by electrodeposition
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应变速率对电沉积Cu/Ni多层复合材料力学性能的影响
DOI：
10.1016/j.msea.2018.04.076
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发表时间：
2018-05-30
期刊：
影响因子：
6.4
通讯作者：
Zhu, Xinkun
中科院分区：
文献类型：
--
作者：
Fu, Zhengrong;Zhang, Zheng;Zhu, Xinkun
采用不同应变速率(5 × 10(-5) ~ 5 × 10（-2) s(-1)）下的室温拉伸试验研究了电沉积多层Cu/Ni复合材料的力学性能。随着应变速率的增加，Cu/Ni多层复合材料的强度和塑性同时提高，应变速率敏感性也随之提高，这与纯Cu和纯Ni组分有很大的不同。Cu/Ni层界面引起的背应力随应变速率的增大而增大。观察到强的背应力加工硬化，这是观察到良好延性的主要原因。
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.