Stacking fault and partial dislocation dominated strengthening mechanisms in highly textured Cu/Co multilayers
Stacking fault and partial dislocation dominated strengthening mechanisms in highly textured Cu/Co multilayers
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DOI：
10.1016/j.ijplas.2013.03.005
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发表时间：
2013-10-01
影响因子：
9.8
通讯作者：
Zhang, X.
中科院分区：
文献类型：
--
作者：
Liu, Y.;Chen, Y.;Zhang, X.
研究了溅射法制备的（1 0 0）和（1 1 1）织构Cu/Co多层膜的界面和力学性能。在（1 0 0）Cu/Co多层膜中，Co主要具有面心立方（FCC）结构和高密度的倾斜层错（SF）。相反，在（111）织构Cu/Co中，取决于层厚度，观察到高密度SF和平行于层界面的孪晶。当单层厚度h为几个纳米时，两个体系都具有完全共格的FCC界面。与（111）Cu/Ni多层膜相比，（111）Cu/Co具有类似的尺寸依赖性强化和峰值硬度。（1 0 0）Cu/Co的峰值强度可能由部分位错跨界面的传输决定，因此低于（1 0 0）Cu/Ni的峰值强度，后者由全位错跨界面的传输决定。爱思唯尔有限公司出版
We investigate the interfaces and mechanical properties of sputtered, highly (1 0 0) and (1 1 1) textured Cu/Co multilayers. In (1 0 0) Cu/Co multilayers, Co has primarily face-centered-cubic (FCC) structure and high density of inclined stacking faults (SFs). In contrast in (1 1 1) textured Cu/Co, dependent on layer thickness, high density SFs and twins parallel to layer interface are observed. When individual layer thickness, h, is a few nanometers, both systems have fully coherent FCC interface. (1 1 1) Cu/Co has similar size dependent strengthening and peak hardness compared to (1 1 1) Cu/Ni multilayers. The peak strength of (1 0 0) Cu/Co may be dominated by the transmission of partial dislocations across interface, and hence it is lower than the peak strength of (1 0 0) Cu/Ni, which is dictated by transmission of full dislocations across interfaces. Published by Elsevier Ltd.