期刊
SCRIPTA MATERIALIA
卷 194, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2020.113639
关键词
Nanoglass; metallic glass; composites; mechanical properties; brick and mortar
类别
资金
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0020295]
- University of Southern California Center for Advanced Research Computing
- U.S. Department of Energy (DOE) [DE-SC0020295] Funding Source: U.S. Department of Energy (DOE)
The study used molecular dynamics simulations to investigate the mechanical properties of metallic glass-nanoglass composites, revealing that by designing a brick and mortar architecture, the mechanical synergy of the two phases can be optimized to improve the overall strength of the material.
We use molecular dynamics simulations to characterize the tensile deformation and failure of metallic glass (MG)-nanoglass (NG) composites designed with a brick and mortar architecture consisting of a 3 nm-grain-size NG matrix and a MG second phase. Results show that the overall strength of the matrix is significantly improved by the second phase without sacrificing the large NG matrix ductility. The mechanical synergy of the two phases is optimized by arranging the MG bricks in a staggered way, which effectively delocalizes the plastic deformation, hindering the buildup of local stress hot spots and the generation of critical shear bands. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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