Thursday, May 23, 2013

1305.5133 (X. Q. Gao et al.)

The glass transition diagram in model metallic glasses    [PDF]

X. Q. Gao, W. H. Wang, K. Zhao, H. Y. Bai
We report a strain rate (equivalent to experimental observation time) induced 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 a 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 glass transition. A three-dimension glass transition phase diagram involved in time, temperature and stress in metallic glasses is established for understanding the nature of the metallic glasses.
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