From brittle to ductile: Density optimization for Zr-BMG cellular structures

被引：30

作者：

Sarac, B. ^{[1
]}

Schroers, J. ^{[1
]}

机构：

[1] Yale Univ, Dept Mech Engn & Mat Sci, New Haven, CT 06511 USA

来源：

SCRIPTA MATERIALIA | 2013年 / 68卷 / 12期

关键词：

Cellular materials; Zr-based metallic glass; In-plane compression test; Shear bands; Brittle-to-ductile transition; BULK METALLIC GLASSES; ROOM-TEMPERATURE; MECHANICAL-PROPERTIES; TENSILE DUCTILITY; MATRIX COMPOSITES; AMORPHOUS-ALLOYS; PLASTICITY; DEFORMATION; SHEAR;

D O I：

10.1016/j.scriptamat.2013.02.030

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Two-dimensional cellular structures made from Zr35Ti30Cu7.5Be27.5 bulk metallic glass with varying relative densities realized in hexagonal structures ranging from 2.5% to 86.0% were fabricated and characterized under quasi-static compression loading. Three distinctive deformation regions were revealed: collective buckling, local failure and global failure, which originate from size effects in metallic glasses and demonstrate the ideal density of similar to 25.0% for energy absorption for this structure. Published by Elsevier Ltd. on behalf of Acta Materialia Inc.

引用

页码：921 / 924

页数：4

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