The Role of Applied Strain on Crystallisation Kinetics of an Amorphous Zr-Based Bulk Metallic Glass
The crystallisation behaviour of Vitreloy 105 during different thermo-mechanical exposure conditions has been studied in a Gleeble 3500 thermo-mechanical simulator (TMS). Strains up to 0.1 applied at rates of 0.001 – 0.01 s-1 in the supercooled liquid region (SLR) from 420 – 435 °C resulted in no change in the crystallisation kinetics compared with purely thermal exposure for the same times and temperatures. Separate deformation studies on the amorphous bulk metallic glass confirmed that the deformation conditions used corresponded to Newtonian flow conditions. It remains to be confirmed whether the lack of influence of permanent deformation persists for deformation at higher strain rates in the non-Newtonian regime.
Yves Bréchet, Emmanuel Clouet, Alexis Deschamps, Alphonse Finel and Frédéric Soisson
H. Widmann and M. Strangwood, "The Role of Applied Strain on Crystallisation Kinetics of an Amorphous Zr-Based Bulk Metallic Glass", Solid State Phenomena, Vols. 172-174, pp. 965-970, 2011