Microstructure and mechanical properties of nanoscale Cu/ (Ta50Nb25Mo25) multilayers

Li Jiang; Max Powers; Yuchi Cui; Benjamin K. Derby; Amit Misra

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Microstructure and mechanical properties of nanoscale Cu/ (Ta50Nb25Mo25) multilayers

机译：纳米级Cu /（Ta50nb25mo25）多层的微观结构和力学性能

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摘要

Nanoscale Cu/(Ta50Nb25Mo25) multilayers comprised of medium entropy alloy Ta50Nb25Mo25 and pure Cu are found to exhibit similar length-scale-dependent deformation mechanisms as metallic multilayers with elemental individual layers, i.e., confined layer slip at layer thickness of tens of nanometers and shear localization at several nanometers. The hardness of the nanoscale Cu/(Ta50Nb25Mo25) multilayers is higher as compared to the pure element FCC/BCC multilayers due to the extra solid solution strengthening contribution in the BCC layer. The synergy between the size effect and solid solution strengthening mechanism is discussed. This is an early report of the multi-component multilayers, which serves to provide directions for developing novel multilayer materials.

机译：发现由中等熵合金Ta50nB25MO25和纯Cu组成的多层，作为金属多层的具有元素各个层的金属多层，即在几十纳米层的层厚度下滑动的金属多层的多层依赖性变形机制表现为类似的长度依赖性变形机制。几纳米的定位。与纯元素FCC / BCC多层相比，纳米级Cu /（Ta 50nb25mO25）多层的硬度较高，由于BCC层中的额外固溶强化贡献，纯元素FCC / BCC多层相比。讨论了尺寸效应和固溶强化机制之间的协同作用。这是多组分多层的早期报告，用于提供开发新型多层材料的方向。

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来源
《Materials Science and Engineering》 |2021年第2期|140200.1-140200.9|共9页
作者
Li Jiang; Max Powers; Yuchi Cui; Benjamin K. Derby; Amit Misra;
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作者单位

Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109 USA;

Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109 USA;

Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109 USA;

Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109 USA;

Department of Materials Science and Engineering University of Michigan Ann Arbor MI 48109 USA;

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原文格式 PDF
正文语种 eng
中图分类
关键词
Nanostructured multilayers; Medium entropy alloy; In situ nanopillar Compression; Nanoindentation; Shear band;

机译：纳米结构多层;中等熵合金;原位纳米玻璃压缩;纳米intentation;剪切乐队;

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Microstructure and mechanical properties of nanoscale Cu/ (Ta50Nb25Mo25) multilayers

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