Title :

Back stress in strain hardening of carbon nanotube/aluminum composites

Author(s) :

Xu, Run [Auteur]
Shanghai Jiao Tong University [Shanghai]
Fan, Genlian [Auteur]
Shanghai Jiao Tong University [Shanghai]
Tan, Zhan Qiu [Auteur]
Shanghai Jiao Tong University [Shanghai]
Ji, Gang [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Chen, Cai [Auteur]
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Beausir, Benoît [Auteur]
Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux [LEM3]
Xiong, Ding-Bang [Auteur]
Shanghai Jiao Tong University [Shanghai]
Guo, Qiang [Auteur]
Shanghai Jiao Tong University [Shanghai]
Guo, Cuiping [Auteur]
Shanghai Jiao Tong University [Shanghai]
Li, Zhi Qiang [Auteur]
Shanghai Jiao Tong University [Shanghai]
Zhang, Di [Auteur]
Shanghai Jiao Tong University [Shanghai]

Journal title :

Materials Research Letters

Volume number :

6

Pages :

113-120

Publication date :

2018

English keyword(s) :

Carbon nanotubes
metal matrix composite
strain hardening
back stress
geometrically-necessary dislocations

HAL domain(s) :

Chimie/Matériaux
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]

English abstract : [en]

As 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 ...
Show more >As 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.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
ENSCL
CNRS
INRA

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Métallurgie Physique et Génie des Matériaux

Submission date :

2019-05-16T17:21:16Z
2019-10-17T12:31:45Z
2020-05-05T14:52:14Z