J Mater Sci Technol ›› 2001, Vol. 17 ›› Issue (01): 49-50.

• Research Articles • Previous Articles     Next Articles

Influence of Isothermal Treatment on Superelastic Behavior of Cu-13.8Al-4.0Ni(mass fraction) Single Crystals

Qingfu CHEN, Liancheng ZHAO, R.Stalmans, J. Van Humbeeck   

  1. Harbin Institute of Technology, Harbin 150001, China...
  • Received:2000-04-05 Revised:1900-01-01 Online:2001-01-28 Published:2009-10-10
  • Contact: Qingfu CHEN

Abstract: The superelastic behaviors of different isothermal treated Cu-13.SAl-4.ONi (mass fraction) single crystals were studied by applying tensile stress along <001> of the β phase. The different isothermal specimens have different superelastic behavior due to the change of the ratio of stress-induced γ1’and β’. The superelasticity ofγ1 phase tends to that of g, phase with cycling. Typical stabilization of stress-induced martensite above Ap results in residual deformation. Due to the reverse transformation of γ1’, there is a deviation of pseudo-yield stress form linear relation with temperature at relatively low stress.

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