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Metallurgical and Materials Transactions A
Published in: Metallurgical and Materials Transactions A 6/2011

01-06-2011 | Symposium: Bulk Metallic Glasses VII

The Duality of Fracture Behavior in a Ca-based Bulk-Metallic Glass

Authors: Gongyao Wang, Peter K. Liaw, Oleg N. Senkov, Daniel B. Miracle

Published in: Metallurgical and Materials Transactions A | Issue 6/2011

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Abstract

Ca65Mg15Zn20 bulk-metallic glass (BMG) exhibited a typical brittle fracture behavior during compressive loading at room temperature. Samples exploded into many small pieces after elastic deformation and no macroscopic plasticity was observed. The fracture surface demonstrated multiple fracture patterns, including typical metallic-glass vein patterns and glass mirror, mist, and hackle patterns. These observations show that Ca-based BMGs are subjected to multiple brittle fracture modes under compressive loading. Periodic nanoscale corrugations were found in the hackle region, which may indicate local plasticity for the brittle fracture.
previous article Influence of Strain Rate on Compressive Deformation Behavior of a Zr-Cu-Ni-Al Bulk Metallic Glass at Room Temperature
next article Deformation and Fracture Behavior of Metallic Glassy Alloys and Glassy-Crystal Composites

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Metadata
Title
The Duality of Fracture Behavior in a Ca-based Bulk-Metallic Glass
Authors
Gongyao Wang
Peter K. Liaw
Oleg N. Senkov
Daniel B. Miracle
Publication date
01-06-2011
Publisher
Springer US
Published in
Metallurgical and Materials Transactions A / Issue 6/2011
Print ISSN: 1073-5623
Electronic ISSN: 1543-1940
DOI
https://doi.org/10.1007/s11661-010-0533-7

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