铜单晶纳米压痕在不同取向下的各向异性

IF 1.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Technology Pub Date : 2023-05-04 DOI:10.1080/02670836.2023.2205771

Maohong Yang, Jian-Long Huang, Yulong Liu, W. Yuan, Guiyi Wu, Shuyan Zhang

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引用次数: 0

摘要

通过实验和模拟研究了铜单晶纳米压痕的各向异性。进行了不同取向的纳米压痕试验，深度为20nm ~ 500nm。采用晶体塑性有限元法进行了数值模拟。结果表明，随着压痕深度的增加，不同取向的试样呈现出各向异性。不同取向试样的累积塑性应变由于加载方向与滑动面法向夹角的不同而不同。取向试样的累积塑性应变最小，取向最大。不同取向样品同时产生的滑移系数的多少是导致纳米压痕性能差异的主要原因。

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Anisotropy of nanoindentation in copper single crystals under different orientations

The anisotropy of nanoindentation in copper single crystals is studied through experiments and simulations. Nanoindentation tests with different orientations were carried out, and the depth was 20nm-500nm. Simulations were carried out using crystal plasticity finite element method. The results show that sample with different orientations present anisotropic with increase of indentation depth. The accumulated plastic strains of the samples with different orientations are different due to the different angle between the loading direct and the normal to the slip surface. The cumulative plastic strain of oriented samples is the smallest, and orientation is the largest. The amount of slip coefficients initiated simultaneously for samples with different orientations is responsible for the differences in nanoindentation properties.

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来源期刊

Materials Science and Technology 工程技术-材料科学：综合

CiteScore

2.70

自引率

5.60%

发文量

审稿时长

3 months

期刊介绍：《Materials Science and Technology》（MST） is an international forum for the publication of refereed contributions covering fundamental and technological aspects of materials science and engineering.