Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 528, Issue 22-23, Pages 6855-6859Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.05.067
Keywords
Bulk metallic glass; Cryogenic temperature; Strain-rate effect; Strength; Free-volume
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Funding
- National Natural Science Foundation of China (NSFC) [10732010, 50911120084, 50904021, 51025415]
- Excellent Youth Foundation of Heilongjiang Province [JC200806]
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The compressive-deformation behavior of the Zr(50.7)Cu(28)Ni(9)Al(12.3) bulk metallic glass has been studied over a wide strain-rate range at cryogenic temperature (123 K). The BMG presents a negative strain-rate effect on the strength. The decrease in the fracture strength at higher strain rates could be attributed to the combination of strain-rate hardening, thermal softening and free-volume softening. (C) 2011 Elsevier B.V. All rights reserved.
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