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Evaluation of the relationship between the effective strain and the springback behavior during the deformation of metallic glass ribbons

Lee, M. H. ; Park, E. S. ; Ott, R. T. ; Kim, B. S. ; Eckert, J.

Applied Physics Letters, 11 August 2014, Vol.105(6) [Periódico revisado por pares]

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  • Título:
    Evaluation of the relationship between the effective strain and the springback behavior during the deformation of metallic glass ribbons
  • Autor: Lee, M. H. ; Park, E. S. ; Ott, R. T. ; Kim, B. S. ; Eckert, J.
  • Assuntos: Structural, Mechanical, Optical, And Thermodynamic Properties Of Advanced Materials
  • É parte de: Applied Physics Letters, 11 August 2014, Vol.105(6)
  • Descrição: We evaluated the role of effective strain on the plasticity of metallic glasses related to springback phenomena in both ductile Zr-based metallic glass and brittle Hf-based metallic glass. Experimental investigations of the deformation behavior and the intrinsic mechanical properties of metallic glass were performed by room temperature L-bending deformation. The modeling analysis clearly shows that an inhomogeneous effective strain for initiating shear band is generated during deformation, with the brittleness of a metallic glass being dependent on the effective strain reaching the critical fracture strain of the glass. The combined experimental and modeling results reveal broad and general criteria that should allow for deformability of a wide-variety of glass-forming alloys by adjusting the effective strain during deformation.
  • Idioma: Inglês

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