J. Mater. Sci. Technol. ›› 2014, Vol. 30 ›› Issue (6): 546-550.DOI: 10.1016/j.jmst.2013.12.021

• Research-article • Previous Articles     Next Articles

A Diagram for Glass Transition and Plastic Deformation in Model Metallic Glasses

Gao X.Q., Wang W.H.*, Bai H.Y.*   

  1. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2013-11-06 Online:2014-06-20 Published:2014-07-31
  • Contact: Corresponding authors. Prof., Ph.D.; Tel.: +86 10 82649198; Fax: +86 10 82640223

Abstract: In this paper, we report a strain rate related glass transition in model SrCaYbMg(Li)Zn(Cu) metallic glasses at room temperature. A critical strain rate, equivalent to glass transition temperature, is found for the strain rate induced glassy state to liquid-like viscoplastic state translation. The results show that the observation time, equivalent to temperature and stress, is a key parameter for the transition between the glass and supercooled liquid states. A three-dimension glass transition diagram involved in time, temperature and stress in metallic glasses is established.

Key words: Homogeneous plastic flow, Glass transition, Metallic glass