Additional hardening in harmonic structured materials by strain partitioning and back stress

Hyung Keun Park; Kei Ameyama; Jongmyung Yoo; Hyunsang Hwang; Hyoung Seop Kim

doi:10.1080/21663831.2018.1439115

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Additional hardening in harmonic structured materials by strain partitioning and back stress

Original Report | 更新时间：2026-08-19

- Additional hardening in harmonic structured materials by strain partitioning and back stress
- Additional hardening in harmonic structured materials by strain partitioning and back stress
- 材料研究快报（英文） 2018年6卷第5期页码：261-267
- 作者机构：
  
  1. Department of Materials Science and Engineering Pohang University of Science and Technology (POSTECH)
  2. Faculty of Science and Engineering Ritsumeikan University
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2018.1439115
  中图分类号：
- 网络首发：2018-02-20，
  
  纸质出版：2018
- 稿件说明：
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Hyung Keun Park, Kei Ameyama, Jongmyung Yoo, 等. Additional hardening in harmonic structured materials by strain partitioning and back stress[J]. 材料研究快报（英文）, 2018,6(5):261-267.

Hyung Keun Park, Kei Ameyama, Jongmyung Yoo, et al. Additional hardening in harmonic structured materials by strain partitioning and back stress[J]. Materials Research Letters, 2018, 6(5): 261-267.
Hyung Keun Park, Kei Ameyama, Jongmyung Yoo, 等. Additional hardening in harmonic structured materials by strain partitioning and back stress[J]. 材料研究快报（英文）, 2018,6(5):261-267. DOI： 10.1080/21663831.2018.1439115.

Hyung Keun Park, Kei Ameyama, Jongmyung Yoo, et al. Additional hardening in harmonic structured materials by strain partitioning and back stress[J]. Materials Research Letters, 2018, 6(5): 261-267. DOI： 10.1080/21663831.2018.1439115.

摘要

Abstract

BSTRACTDeformation behavior of a harmonic structured material (HSM)

core–shell 304L stainless steel

is investigated using micro-digital image correlation (micro-DIC). High strain-partitioning between core and shell is observed. Because the grain boundaries with a grain-size gradient in HSM induce high deformation-incompatibility

strain peaks are detected near core–shell boundaries and in grain boundaries of cores. This incompatibility is compensated by geometrically necessary dislocations

generating back stress. The back stress is measured using tensile unloading-reloading testing. This investigation demonstrates higher back stress and strain hardening rate in HSMs than homogeneous materials

resulting in enhanced ductility.

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相关机构

Chinese Academy of Sciences State Key Laboratory of Nonlinear Mechanics Institute of Mechanics 15 Beisihuan West Road

Chinese Academy of Sciences State Key Laboratory of Nonlinear Mechanics Institute of Mechanics 15 Beisihuan West Road Beijing China

Intern from School of Aerospace Engineering and Applied Mechanics Tongji University No. Siping Road

Department of Materials Science and Engineering North Carolina State University Campus Box 7919 Raleigh 95 USA

School of Materials Science and Engineering Nanjing University of Science and Technology Xiaolingwei

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