Cryogenic temperature plasticity of a bulk amorphous alloy
- Cryogenic temperature plasticity of a bulk amorphous alloy
- 윤규상; 이미림; 에릭플러리; 이재철
- Amorphous alloy; Cryogenic temperature plasticity; Serrations; Viscosity; Band velocity
- Issue Date
- Acta materialia
- VOL 58, NO 16, 5295-5304
- 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.
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