Back stress in strain hardening of carbon nanotube/aluminum composites

Run Xu; Genlian Fan; Zhanqiu Tan; Gang Ji; Cai Chen; Benoît Beausir; Ding-Bang Xiong; Qiang Guo; Cuiping Guo; Zhiqiang Li; Di Zhang

doi:10.1080/21663831.2017.1405371

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Back stress in strain hardening of carbon nanotube/aluminum composites

Original Report | 更新时间：2026-08-19

- Back stress in strain hardening of carbon nanotube/aluminum composites
- Materials Research Letters Vol. 6, Issue 2, Pages: 113-120(2018)
- 作者机构：
  
  1. State Key Laboratory of Metal Matrix Composites School of Materials Science and Engineering Shanghai Jiao Tong University
  2. Unité Matériaux et Transformations (UMET) CNRS UMR Université Lille 1,8207
  3. Laboratoire d’Etude des Microstructures et de Mécanique des Matériaux (LEM3) Université de Lorraine/CNRS Ile du Saulcy
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2017.1405371
  CLC：
- Online First：27 November 2017，
  
  Published：2018
- 稿件说明：
移动端阅览
Run Xu, Genlian Fan, Zhanqiu Tan, et al. Back stress in strain hardening of carbon nanotube/aluminum composites[J]. Materials Research Letters, 2018, 6(2): 113-120.
DOI：

Run Xu, Genlian Fan, Zhanqiu Tan, et al. Back stress in strain hardening of carbon nanotube/aluminum composites[J]. Materials Research Letters, 2018, 6(2): 113-120. DOI： 10.1080/21663831.2017.1405371.

摘要

Abstract

BSTRACTAs demonstrated by the loading–unloading tests and the modeling of the grain size effect and the composite effect

mainly owing to the back stress induced by CNTs

carbon nanotube/aluminum (CNT/Al) composites exhibit higher strain hardening capability than the unreinforced ultrafine-grained Al matrix. The back stress induced by CNTs should arise from the interfacial image force and the long-range interaction between statically stored dislocations and geometrically necessary dislocations around the CNT/Al interface. Therefore

this CNT-induced interfacial back stress strengthening mechanism is supposed to provide a novel route to enhancing the strain hardening capability and ductility in CNT/Al composites.

IMPACT STATEMENT

The present work investigates the roles and origins of back stress in the strain hardening of the carbon nanotubes/aluminum composites for the first time.

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Related Institution

b Dongguan Institute of Materials Science and Technology Chinese Academy of Sciences

a Songshan Lake Materials Laboratory Dongguan People’s Republic of China

c College of Physics and Optoelectronic Engineering Shenzhen University

d College of Physics and Telecommunication Engineering Zhoukou Normal University

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