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Crystallization behavior upon heating and cooling in Cu50Zr50 metallic glass thin films

Publication ,  Journal Article
Lee, D; Zhao, B; Perim, E; Zhang, H; Gong, P; Gao, Y; Liu, Y; Toher, C; Curtarolo, S; Schroers, J; Vlassak, JJ
Published in: Acta Materialia
December 1, 2016

We have investigated the crystallization kinetics of Cu50Zr50 metallic glass thin films using nanocalorimetry. The crystallization process is growth-controlled during heating and nucleation-controlled during cooling, resulting in different critical heating and cooling rates to suppress crystallization. Measurements over a wide range of scanning rates (13 K/s to 21,000 K/s) reveal that crystallization does not follow Arrhenius kinetics upon heating. Instead, the behavior on heating is well described by a fragility-based model of growth-controlled kinetics that takes into account breakdown of the Stokes-Einstein relationship. Upon cooling, the quench rate required to suppress crystallization of the melt is much higher than for bulk samples. This reduced asymmetry in critical heating and cooling rates compared to bulk materials suggests that crystallization of the thin-film metallic glass is controlled by heterogeneous nucleation.

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Published In

Acta Materialia

DOI

ISSN

1359-6454

Publication Date

December 1, 2016

Volume

121

Start / End Page

68 / 77

Related Subject Headings

  • Materials
  • 5104 Condensed matter physics
  • 4017 Mechanical engineering
  • 4016 Materials engineering
  • 0913 Mechanical Engineering
  • 0912 Materials Engineering
  • 0204 Condensed Matter Physics
 

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Lee, D., Zhao, B., Perim, E., Zhang, H., Gong, P., Gao, Y., … Vlassak, J. J. (2016). Crystallization behavior upon heating and cooling in Cu50Zr50 metallic glass thin films. Acta Materialia, 121, 68–77. https://doi.org/10.1016/j.actamat.2016.08.076
Lee, D., B. Zhao, E. Perim, H. Zhang, P. Gong, Y. Gao, Y. Liu, et al. “Crystallization behavior upon heating and cooling in Cu50Zr50 metallic glass thin films.” Acta Materialia 121 (December 1, 2016): 68–77. https://doi.org/10.1016/j.actamat.2016.08.076.
Lee D, Zhao B, Perim E, Zhang H, Gong P, Gao Y, et al. Crystallization behavior upon heating and cooling in Cu50Zr50 metallic glass thin films. Acta Materialia. 2016 Dec 1;121:68–77.
Lee, D., et al. “Crystallization behavior upon heating and cooling in Cu50Zr50 metallic glass thin films.” Acta Materialia, vol. 121, Dec. 2016, pp. 68–77. Scopus, doi:10.1016/j.actamat.2016.08.076.
Lee D, Zhao B, Perim E, Zhang H, Gong P, Gao Y, Liu Y, Toher C, Curtarolo S, Schroers J, Vlassak JJ. Crystallization behavior upon heating and cooling in Cu50Zr50 metallic glass thin films. Acta Materialia. 2016 Dec 1;121:68–77.
Journal cover image

Published In

Acta Materialia

DOI

ISSN

1359-6454

Publication Date

December 1, 2016

Volume

121

Start / End Page

68 / 77

Related Subject Headings

  • Materials
  • 5104 Condensed matter physics
  • 4017 Mechanical engineering
  • 4016 Materials engineering
  • 0913 Mechanical Engineering
  • 0912 Materials Engineering
  • 0204 Condensed Matter Physics