Ductility by shear band delocalization in the nano-layer of gradient structure

Fuping Yuan; Dingshun Yan; Jiangda Sun; Lingling Zhou; Yuntian Zhu; Xiaolei Wu

doi:10.1080/21663831.2018.1546238

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Ductility by shear band delocalization in the nano-layer of gradient structure

Original Report | 更新时间：2026-08-19

- Ductility by shear band delocalization in the nano-layer of gradient structure
- Materials Research Letters Vol. 7, Issue 1, Pages: 12-17(2019)
- 作者机构：
  
  1. State Key Laboratory of Nonlinear Mechanics Chinese Academy of Science Institute of Mechanics Beijing People’s Republic of China
  2. School of Engineering Science University of Chinese Academy of Sciences
  3. State Key Laboratory of Nonlinear Mechanics Chinese Academy of Science Institute of Mechanics
  4. Nano and Heterostructural Materials Center School of Materials Science and Engineering Nanjing University of Science and Technology Nanjing People’s Republic of China
  5. Department of Materials Science and Engineering North Carolina State University Raleigh
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2018.1546238
  CLC：
- Online First：19 November 2018，
  
  Published：2019
- 稿件说明：
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Fuping Yuan, Dingshun Yan, Jiangda Sun, et al. Ductility by shear band delocalization in the nano-layer of gradient structure[J]. Materials Research Letters, 2019, 7(1): 12-17.
DOI：

Fuping Yuan, Dingshun Yan, Jiangda Sun, et al. Ductility by shear band delocalization in the nano-layer of gradient structure[J]. Materials Research Letters, 2019, 7(1): 12-17. DOI： 10.1080/21663831.2018.1546238.

摘要

Abstract

BSTRACTNanostructured (NS) metals typically fail soon after yielding

starting with the formation of narrow shear bands. Here we report the observation of shear band delocalization in gradient metals. Shear bands were nucleated and delocalized in the NS layers by propagating along the gage length soon after yielding

converting the shear band into a localized strain zone (LSZ). Synergistic work hardening was developed in the LSZ by regaining dislocation hardening capability

and by back-stress hardening from the strain gradients in the axial and depth directions

which helped with enhancing global ductility.

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Related Author

Xiangde Bian

Fuping Yuan

Yuntian Zhu

Xiaolei Wu

Muxin Yang

Yue Pan

Fuping Yuan

Yuntian Zhu

Related Institution

State Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing People’s Republic of China

Department of Materials Science and Engineering North Carolina State University Raleigh NC USA

Nano Structural Materials Center School of Materials Science and Engineering Nanjing University of Science and Technology

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

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