Tuning the Mechanical Properties of Shape Memory Metallic Glass Composites with Nature Inspired Designs

26 Pages Posted: 19 Feb 2020

See all articles by Suyue Yuan

Suyue Yuan

University of Southern California - Mork Family Department of Chemical Engineering and Materials Science

Xinxiang Song

Nanjing University of Science and Technology - School of Material Science and Engineering

Paulo S. Branicio

University of Southern California - Mork Family Department of Chemical Engineering and Materials Science

Abstract

We use large-scale molecular dynamics simulations of tensile loading to characterize the deformation and failure of nature inspired shape memory alloys-bulk metallic glass composite (BMGCs) designs. Results show synergy of the two phases resulting in heterogeneous distribution of stress assisted delocalization of plastic deformation. A staggered brick BMGC model displays enhanced ductility with mild strength loss following a rather homogeneous distribution of plastic events. These results reveal that nature inspired BMGC designs can effectively synergize the mechanical properties of metallic glasses and shape memory alloys by delaying the generation of critical shear bands and premature failure while preserving strength.

Keywords: metallic glasses, composites, shape memory alloys, molecular-dynamics, mechanical properties

Suggested Citation

Yuan, Suyue and Song, Xinxiang and Branicio, Paulo S., Tuning the Mechanical Properties of Shape Memory Metallic Glass Composites with Nature Inspired Designs. Available at SSRN: https://ssrn.com/abstract=3538821 or http://dx.doi.org/10.2139/ssrn.3538821

Suyue Yuan (Contact Author)

University of Southern California - Mork Family Department of Chemical Engineering and Materials Science

Los Angeles, CA 90089
United States

Xinxiang Song

Nanjing University of Science and Technology - School of Material Science and Engineering

No.219, Ningliu Road
Nanjing, Jiangsu
China

Paulo S. Branicio

University of Southern California - Mork Family Department of Chemical Engineering and Materials Science ( email )

Los Angeles, CA 90089
United States

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