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A Ti36.2Zr30.3Cu8.3Fe4Be21.2bulk metallic glass with exceptional glass forming ability and remarkable compressive plasticity

Authors
Journal
Journal of Alloys and Compounds
0925-8388
Publisher
Elsevier
Publication Date
Volume
562
Identifiers
DOI: 10.1016/j.jallcom.2013.02.047
Keywords
  • Bulk Metallic Glass
  • Glass Forming Ability
  • Plasticity
  • Work Hardening

Abstract

Abstract The limited glass forming ability (GFA) and deficient plasticity are two longstanding bottlenecks for the applications of bulk metallic glasses (BMGs) as structural materials. In this article, we report a TiZr-based BMG with nominal composition of Ti36.2Zr30.3Cu8.3Fe4Be21.2 (at.%) which possesses exceptional GFA and remarkable compressive plasticity simultaneously. The alloy ingot in weight of 150g can be solidified into an amorphous state, indicating an exceptional GFA – the critical size for glass forming of the current BMG is estimated over 50mm. The plasticity of about 8% was obtained from the as-cast 2-mm-diameter rod with an aspect ratio of 2, concomitant obvious work hardening effect. The present BMG possessing exceptional GFA and remarkable compressive plasticity simultaneously may have a scientific importance on developing BMGs for structural applications.

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