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Article Dans Une Revue Materials Research Letters Année : 2018

Back stress in strain hardening of carbon nanotube/aluminum composites

Résumé

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.
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hal-02318808 , version 1 (05-05-2020)

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Run Xu, Genlian Fan, Zhan Qiu Tan, Gang Ji, Cai Chen, et al.. Back stress in strain hardening of carbon nanotube/aluminum composites. Materials Research Letters, 2018, 6 (2), pp.113-120. ⟨10.1080/21663831.2017.1405371⟩. ⟨hal-02318808⟩
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