Role of microscopic degrees of freedom in mechanical response of bicrystal nanopillars

Avanish Mishra; Khanh Dang; Edward M. Kober; Saryu J. Fensin; Nithin Mathew

doi:10.1080/21663831.2023.2252885

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Role of microscopic degrees of freedom in mechanical response of bicrystal nanopillars

Original Reports | 更新时间：2026-08-19

- Role of microscopic degrees of freedom in mechanical response of bicrystal nanopillars
- Role of microscopic degrees of freedom in mechanical response of bicrystal nanopillars
- 材料研究快报（英文） 2023年11卷第10期页码：872-878
- 作者机构：
  
  1. a Theoretical Division (T-1) Los Alamos National Laboratory Los Alamos
  2. b Materials Science and Technology (MST-8) Los Alamos National Laboratory Los Alamos
  3. c Materials Physics and Applications (MPA-CINT) Los Alamos National Laboratory Los Alamos
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2023.2252885
  中图分类号：
- 网络首发：2023-09-06，
  
  纸质出版：2023
- 稿件说明：
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Avanish Mishra, Khanh Dang, Edward M. Kober, 等. Role of microscopic degrees of freedom in mechanical response of bicrystal nanopillars[J]. 材料研究快报（英文）, 2023,11(10):872-878.

Avanish Mishra, Khanh Dang, Edward M. Kober, et al. Role of microscopic degrees of freedom in mechanical response of bicrystal nanopillars[J]. Materials Research Letters, 2023, 11(10): 872-878.
Avanish Mishra, Khanh Dang, Edward M. Kober, 等. Role of microscopic degrees of freedom in mechanical response of bicrystal nanopillars[J]. 材料研究快报（英文）, 2023,11(10):872-878. DOI： 10.1080/21663831.2023.2252885.

Avanish Mishra, Khanh Dang, Edward M. Kober, et al. Role of microscopic degrees of freedom in mechanical response of bicrystal nanopillars[J]. Materials Research Letters, 2023, 11(10): 872-878. DOI： 10.1080/21663831.2023.2252885.

摘要

Abstract

This study investigated the high-strain rate deformation of bicrystal Cu nanopillars

using atomistic simulations. Nanopillars with minimum grain boundary energy were deformed to investigate the role of macroscopic degrees of freedom

finding that geometric parameters (Schmid factor) influence the stress–strain response. The deformation of metastable grain boundaries (GBs) revealed that in addition to geometric parameters

the response was also governed by the local atomic arrangement at the boundary

dictating the dislocation-GB interactions. These findings shed light on the response of nanopillars as a function of GBs and show the importance of both macroscopic and microscopic degrees of freedom on the mechanical response.

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相关机构

Department of Materials Science and Engineering University of North Texas Denton

State Key Laboratory of High-Performance Roll Materials and Composite Forming School of Materials Science and Engineering Hebei University of Technology

a Institute of Metal Research Chinese Academy of Sciences Shenyang People’s Republic of China

b School of Materials Science and Engineering University of Science and Technology of China

a Institute of Metal Research Chinese Academy of Sciences

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