Journal
INTERMETALLICS
Volume 36, Issue -, Pages 31-35Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.intermet.2012.12.016
Keywords
Glasses, metallic; Plastic deformation mechanism; Plastic forming, cold; Mechanical properties, theory
Categories
Funding
- National Natural Science Foundation of China [51101110]
- Youth Science Foundation of Shanxi Province, China [2012021018-1]
- Shanxi Scholarship Council of China [2012-032]
- National Science Foundations [DMR-0909037, CMMI-0900271, CMMI-1100080]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [909037] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1100080] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0900271] Funding Source: National Science Foundation
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Dynamic shear punching is employed to process Zr36.6Ti31.4Nb7Cu5.9Be19.1 metallic glass matrix composites. A brittle fracture dominates during punchforming, and no macroscopic cracks or ruffles can be found, indicative of a good surface finish. The softening instability for metallic glasses happens once the yielding is available, avoiding the existence of shear bands and achieving smooth surfaces. No crystallization is accompanied in the heavy deformation zones during dynamic shear punching. The thickness of punched sheets for various BMG systems is highly dependent on the shear strengths. Furthermore, it is deduced that larger glass-transition temperatures of BMGs correspond to the thinner punched sheets, which provides a theoretical guidance to rapidly process metallic glass sheets. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.
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