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

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.

  Info
Periodical
Materials Science Forum (Volumes 618-619)
Edited by
M.S. Dargusch & S.M. Keay
Pages
437-441
DOI
10.4028/www.scientific.net/MSF.618-619.437
Citation
H. W. Xie, P. D. Hodgson, C. E. Wen, "Effect of Structure Relaxation on the Plastic Deformation Behaviour in a Zr-Based BMG under Indenter", Materials Science Forum, Vols 618-619, pp. 437-441, Apr. 2009
Online since
April 2009
Price
US$ 28,-
Share
Authors: Luzinete Pereira Barbosa, N.A. Ferreira, Hidetoshi Takiishi, Rubens Nunes de Faria
Abstract:Permanent magnets were produced from annealed alloys using the hydrogenation, disproportionation, desorption and recombination (HDDR)...
125
Authors: Wen Jun He, Guang Hui Min, Oleg V. Tolochko
Abstract:Crystal structures and shape memory properties of Ti-rich Ti52Ni23Cu25 (at.%) ribbon annealed at 450°C for 10 min and 1 h were investigated...
2259
Authors: Timothy Wong, Z. Yu, K. Suzuki, M.A. Gibson, K. Ishikawa, K. Aoki
Abstract:Nb/NiZr composite alloy membranes have been reported to have hydrogen permeabilities higher than that of pure Pd. Since the hydrogen...
2839
Authors: Ho Jun Bang, Ha Guk Jeong, Jong Beom Lee
B. Eco-Materials Processing and Design, Multifunctional Materials
Abstract:Mg alloy sheets exhibit the yield strength of 280 MPa and elongation of 18 % by rolling at 423 K. Elongation of Mg alloy sheets was improved...
190
Authors: K. Karalis, P. Tserotas
Abstract:The tribological properties of a Zr-based bulk metallic glass were improved via dispersion of graphite particles into the alloy matrix. It...
250