Deformation-induced interfacial transition zone in Cu/V nanolamellar multilayers
Deformation-induced interfacial transition zone in Cu/V nanolamellar multilayers
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DOI：
10.1016/j.scriptamat.2018.09.031
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发表时间：
2019-01
影响因子：
6
通讯作者：
Siyuan Wei;Lifeng Zhang;Shijian Zheng;Xianping Wang;Jiangwei Wang
中科院分区：
文献类型：
--
作者：
Siyuan Wei;Lifeng Zhang;Shijian Zheng;Xianping Wang;Jiangwei Wang
研究了交叉累积叠轧复合制备Cu/V多层膜的界面结构，发现了两种不同类型的界面，即规则的尖锐界面和不规则的界面过渡区（ITZ）。不寻常的ITZ是过饱和固溶体，Cu原子溶解在V基体中，占总界面的约30%。界面过渡区的形成是由于轧制过程中剧烈的塑性变形促进了位错在界面处的质量传递。类似的界面区也应该存在于其他金属多层膜系统的严重塑性变形，这可能有重要的贡献，他们的性能。
Interface structures of Cu/V multilayers fabricated by cross accumulative roll bonding were studied, where two different types of interfaces were identified, i.e. regular sharp interfaces and uncommon interfacial transition zone (ITZ). The unusual ITZs are supersaturated solid solution with Cu atoms dissolved in V matrix, which contribute to ~30% of the total interfaces. The formation of ITZ can be ascribed to the dislocation-mediated mass transport at bimetal interfaces, facilitated by the severe plastic deformation upon rolling. Similar ITZs should also exist in other metallic multilayer systems fabricated by severe plastic deformation, which may have important contributions to their performances.