The Role of Applied Strain on Crystallisation Kinetics of an Amorphous Zr-Based Bulk Metallic Glass

Heiko Widmann; Martin Strangwood

doi:10.4028/www.scientific.net/SSP.172-174.965

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The Role of Applied Strain on Crystallisation Kinetics of an Amorphous Zr-Based Bulk Metallic Glass

Abstract:

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.

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Periodical:

Solid State Phenomena (Volumes 172-174)

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965-970

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.172-174.965

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Online since:

June 2011

Authors:

Heiko Widmann, Martin Strangwood

Keywords:

Bulk Metallic Glass (BMG), Crystallization, Thermo-Mechanical Effect

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References

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