Cryogenic temperature plasticity of a bulk amorphous alloy

Title
Cryogenic temperature plasticity of a bulk amorphous alloy
Authors
윤규상이미림에릭플러리이재철
Keywords
Amorphous alloy; Cryogenic temperature plasticity; Serrations; Viscosity; Band velocity
Issue Date
2010-09
Publisher
Acta materialia
Citation
VOL 58, NO 16, 5295-5304
Abstract
Unlike crystalline alloys, bulk amorphous alloys exhibit a significantly enhanced plastic strain when tested at cryogenic temperatures. It was observed that both the retarded band propagation and the multiple shear banding are the characteristic features of the shear banding behaviors that are responsible for the enhanced plasticity at cryogenic temperatures. This study explores the retarded band propagation behavior at cryogenic temperatures in terms of the increased viscosity of a material inside a propagating band. The formation of multiple shear bands at cryogenic temperatures is also clarified by evaluating the role played by the cryogenic environment in facilitating the creation of disorder, where local deformation nucleates.
URI
http://pubs.kist.re.kr/handle/201004/37789
ISSN
1359-6454
Appears in Collections:
KIST Publication > Article
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