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A phase-field model for phase transformations in glass-forming alloys
Metallurgical and Materials Transactions A
  • Tao Wang, Iowa State University
  • Ralph E. Napolitano, Iowa State University
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A phase-field model is proposed for phase transformations in glass-forming alloys. The glass transition is introduced as a structural relaxation, and the competition between the glass and crystalline phases is investigated. The simulations are performed for Cu-Zr alloys, employing thermodynamic and kinetic parameters derived from reported thermodynamic modeling and molecular dynamics simulation results,[1–3] respectively. Four distinct phase fields are treated with a multi-phase-field approach, representing the liquid/glass, Cu10Zr7, CuZr, and CuZr2 phases. In addition, a continuum-field method is applied to the liquid to accommodate the liquid–glass transformation. The combined phase-field approach is used to investigate the glass formation tendency, and critical cooling rates are estimated and compared with the reported experimental values.

This article is from Metallurgical and Materials Transactions A 43 (2012): 2662, doi:10.1007/s11661-012-1136-2. Posted with permission.

Copyright 2012 ASM International. This paper was published in Metallurgical and Materials Transactions A, Vol. 43, Issue 8, pp. 2662-2668 and is made available as an electronic reprint with the permission of ASM International. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplications of any material in this paper for a fee or for commercial purposes, or modification of the content of this paper are prohibited.
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Tao Wang and Ralph E. Napolitano. "A phase-field model for phase transformations in glass-forming alloys" Metallurgical and Materials Transactions A Vol. 43 Iss. 8 (2012) p. 2662 - 2668
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