Metallurgical and Materials Transactions A

, Volume 46, Issue 2, pp 926–936

Phase-Field Model for Mixed-Mode of Growth Applied to Austenite to Ferrite Transformation

Article

DOI: 10.1007/s11661-014-2665-7

Cite this article as:
Bhattacharya, A., Upadhyay, C.S. & Sangal, S. Metall and Mat Trans A (2015) 46: 926. doi:10.1007/s11661-014-2665-7

Abstract

A thermodynamically consistent phase-field model is formulated for binary-alloy, particularly applicable to the systems which have a significant difference in mobilities of the solute and solvent atoms, e.g., interstitial solutes. The model is based on the mixed-mode of growth which is considered to be the general mode of transformation. As an illustration, the model has been used to simulate austenite to ferrite transformation in one-dimension. The model is made ‘quantitative’ using a different diffusivity-interpolation function without using anti-trapping flux term. The simulation-result is compared with the experimental results, and good agreement with the mixed-mode of growth in the initial stage of the transformation (when the individual nuclei are far apart) has been observed.

Copyright information

© The Minerals, Metals & Materials Society and ASM International 2014

Authors and Affiliations

  • Avisor Bhattacharya
    • 1
    • 3
  • C. S. Upadhyay
    • 2
  • S. Sangal
    • 1
  1. 1.Department of Materials Science and EngineeringIndian Institute of TechnologyKanpurIndia
  2. 2.Department of Aerospace EngineeringIndian Institute of TechnologyKanpurIndia
  3. 3.Karlsruhe Institute of Technology, Institute of Applied MaterialsKarlsruheGermany

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