Paper Title:

Effect of Structure Relaxation on the Plastic Deformation Behaviour in a Zr-Based BMG under Indenter

Periodical Materials Science Forum (Volumes 618 - 619)
Main Theme Light Metals Technology 2009
Edited by M.S. Dargusch & S.M. Keay
Pages 437-441
DOI 10.4028/www.scientific.net/MSF.618-619.437
Citation Hao Wen Xie et al., 2009, Materials Science Forum, 618-619, 437
Online since April 2009
Authors Hao Wen Xie, Peter D. Hodgson, Cui E Wen
Keywords Bulk Metallic Glass (BMG), Free Volume, Plastic Deformation, Shear Band, Structure Relaxation
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Vickers and nano indentations were performed on a structurally relaxed Zr41Ti14Cu12.5Ni10Be22.5 bulk metallic glass (BMG), and the evolution of the shear bands in the relaxed BMG was investigated and compared to that in the as-cast alloy. Results indicate that the plastic deformation in the BMG with structure relaxation is accommodated by the semicircular (primary) and radial (secondary) as well as tertiary shear bands. Quantitatively, the shear band density in the relaxed alloy was much lower than that in the as-cast alloy. The annihilation of free volume caused by the annealing was responsible for the embrittlement of the sample with structure relaxation.