An Analytical Method for Studying the Stress-Strain Relations of Bulk Metallic Glass Matrix Composites under Tension

Advanced Composites Letters

Article

Yunpeng Jiang¹ 

[1] State Key Laboratory of Mechanics and Control of Mechanical, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;

关键词: Bulk metallic glass composites (BMGs);    Shear band;    Microstructure;    Stress–strain relations;    Analytical model;   

DOI  :  10.1177/096369351802700603

 received in 2016-07-14, accepted in 2016-09-15,  发布年份 2018

来源: Sage Journals

【 摘 要 】

In this contribution, an analytical model was formulated to predict the tensile stress-strain relations of bulk metallic glass matrix composites (BMGCs) based on Weng's theoretical frame for dual-ductile composites. For in-situ BMGCs, BMG matrix also exhibits the elastic-plastic deform response as well as the dendrite phases during the stretching. The shear bands are regarded as Mode-I cracks, and whereby the strain-softening stage in the stress-strain curves can be well reflected. Furthermore, multi-particle representative volume element based FEM modelling was employed to clearly explain the failure mechanisms in BMGCs as a necessary complement. The predictions are in reasonable agreement with the experimental results. The presented analytical method will shed some light on optimizing the microstructures, and is of convenience in the engineering applications.

【 授权许可】

Unknown   
© 2018 SAGE Publications Ltd

【 图 表 】

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