Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Study for Local Glass Transition of Bulk Metallic Glasses using Atomic Strain

원자변형률을 이용한 비정질 금속의 천이온도에 관한 연구

  • Park, Jun-Young (Department of Mechanical Design Engineering, Kumoh National Institute of Technology)
  • Received : 2011.08.02
  • Accepted : 2011.10.06
  • Published : 2011.10.31
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Abstract

Bulk metallic glasses (BMG) have been greatly improved by the advance of synthesis process during last three decades. It was also found that the Glass Forming Ability (GFA) strongly depends on the glass transition temperature. When the temperature approaches to a critical value, the crystals nucleation from the supercooled liquid can be suppressed so that bulk glass formation possible. Egami and others found that the local glass transition temperature depends on the volumetric strain of each atom and suggested the critical transition temperature. In this paper, we explore the strain dependency of local glass transition temperature using the atomic strain defined by the deformation tensor for the Voronoi polyhedra.

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References

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