Title of Paper:Enhanced tensile ductility of metallic glass matrix composites with novel microstructure

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Affiliation of Author(s):航空学院

Journal:JOURNAL OF NON-CRYSTALLINE SOLIDS

Key Words:Metallic glass Tensile plasticity Microstructure Finite element method (FEM)

Abstract:In this paper, numerical study was conducted to reveal the effects of particle concentration and particle morphology on the tensile behaviors of metallic glass (MG) matrix composites. Free volume acts as an internal state variable to depict the nucleation, growth and coalescence of shear bands in the MG matrix composites on the basis of free volume theory, which was incorporated into the ABAQUS code as a user material subroutine UMAT. The impedance efficiency of various microstructures on the propagation of shear bands was discussed, and whereby a novel network configuration of second-phase was suggested to improve MG's tensile plasticity. The present work is helpful to understand the failure mechanisms and the tensile toughening design of MG matrix composites. (C) 2016 Elsevier B.V. All rights reserved.

ISSN No.:0022-3093

Translation or Not:no

Date of Publication:2017-03-01

Co-author:Sun, Longgang,Wu, Qingqing,Qiu, Kun

Correspondence Author:姜云鹏