Title of Paper:Modeling of Metallic Glass Matrix Composites Under Compression: Microstructure Effect on Shear Band Evolution

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Affiliation of Author(s):航空学院

Journal:METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE

Key Words:MECHANICAL-PROPERTIES MO PARTICLES SIMULATION DUCTILITY

Abstract:The relationship among processing, microstructure, and mechanical performance is the most important for metallic glass matrix composites (MGCs). Numerical modeling was performed on the shear banding in MGCs, and the impacts of particle concentration, morphology, agglomerate, size, and thermal residual stress were revealed. Based on the shear damage criterion, the equivalent plastic strain acted as an internal state variable to depict the nucleation, growth, and coalescence of shear bands. The element deletion technique was employed to describe the process of transformation from shear band to micro-crack. The impedance effect of particle morphology on the propagation of shear bands was discussed, whereby the toughening mechanism was clearly interpreted. The present work contributes to the subsequent strengthening and toughening design of MGCs.

ISSN No.:1073-5623

Translation or Not:no

Date of Publication:2018-01-01

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

Correspondence Author:姜云鹏