Journal
SCRIPTA MATERIALIA
Volume 59, Issue 12, Pages 1243-1246Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2008.08.023
Keywords
Differential scanning calorimetry; Metallic glass; Plastic deformation; Shear bands; Structural relaxation
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Funding
- European Commission
- Trinity College, Cambridge and the Schlumberger Cambridge Trust
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Differential scanning calorimetry heating runs on as-cast and shot-peened bulk metallic glass Pd40Cu30Ni10P20 show a broad temperature range of heat release (relaxation spectrum) with two peaks. The higher-temperature peak is reduced by shot-peening, suggesting uniform deformation and partial relaxation of the glassy structure. Peening of pre-annealed samples shows the stored energy of cold work to be a few per cent of the work done. Peening increases atomic mobility, revealed by a downward temperature shift of the relaxation spectrum. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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