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Plastic deformation in a partially crystallized Zr-based BMG under Vickers indenter

Version 2 2024-06-03, 10:56
Version 1 2014-10-28, 08:57
journal contribution
posted on 2024-06-03, 10:56 authored by H Xie, Y Li, S Liao, Peter HodgsonPeter Hodgson, C Wen
Vickers indentations were carried out on an anneal-introduced partially crystallized Zr41Ti14Cu12.5 Ni10Be22.5 bulk metallic glass (BMG), and the evolution of the shear bands in this samplewas investigated and compared to the as-cast, aswell as the structurally relaxed counterparts. The results indicate that the plastic deformation in the partially crystallized BMG was accommodated by the semi-circular (primary) and radial (secondary) shear bands. A full crack or flake that was produced due to the spring back during the load removal was observed. The shear band density in the annealed alloy which was dispersed with crystalliteswas significantly lower than that of the as-cast alloy. The difference of the shear band features among the three kinds of alloy status, i.e., partially crystallized, structurally relaxed and as-cast alloys was discussed in terms of the free volume in the BMGs and the characteristics of nano-composites. It has been demonstrated that the plasticity for the three statuses of alloys queues in the descending order as the as-cast, annealed with partial crystallization, and annealed without crystallization.

History

Journal

Journal of alloys and compounds

Volume

484

Pagination

886-890

Location

Amsterdam, Netherlands

ISSN

0925-8388

eISSN

1873-4669

Language

eng

Publication classification

C1 Refereed article in a scholarly journal, C Journal article

Copyright notice

2009, Elsevier

Issue

1-2

Publisher

Elsevier BV