Paper Title:
Investigation of Spinodal Decomposition in Fe-Cr Alloys: CALPHAD Modeling and Phase Field Simulation
  Abstract

This work is dedicated to simulate the spinodal decomposition of Fe-Cr bcc (body centered cubic) alloys using the phase field method coupled with CALPHAD modeling. Thermodynamic descriptions have been revised after a comprehensive review of information on the Fe-Cr system. The present work demonstrates that it is impossible to reconcile the ab initio enthalpy of mixing at the ground state with the experimental one at 1529 K using the state-of-the-art CALPHAD models. While the phase field simulation results show typical microstructure of spinodal decomposition, large differences have been found on kinetics among experimental results and simulations using different thermodynamic inputs. It was found that magnetism plays a key role on the description of Gibbs energy and mobility which are the inputs to phase field simulation. This work calls for an accurate determination of the atomic mobility data at low temperatures.

  Info
Periodical
Solid State Phenomena (Volumes 172-174)
Edited by
Yves Bréchet, Emmanuel Clouet, Alexis Deschamps, Alphonse Finel and Frédéric Soisson
Pages
1060-1065
DOI
10.4028/www.scientific.net/SSP.172-174.1060
Citation
W. Xiong, K. A. Grönhagen, J. Ågren, M. Selleby, J. Odqvist, Q. Chen, "Investigation of Spinodal Decomposition in Fe-Cr Alloys: CALPHAD Modeling and Phase Field Simulation", Solid State Phenomena, Vols. 172-174, pp. 1060-1065, 2011
Online since
June 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Orlando Soriano Vargas, Erika O. Avila Davila, Victor M. Lopez-Hirata, Maribel L. Saucedo-Muñoz
Abstract:The hardening behavior of precipitation was studied during aging of Fe-Cr alloys. This mechanical behavior is associated with the nanometric...
443
Authors: Nicolas Lecoq, Jacques Lacaze, Frédéric Danoix, Renaud Patte
Abstract:Despite the tremendous success of phase-field (PF) modelling in predicting many of the experimentally observed microstructures in solids,...
1072
Authors: Enrique Martinez, Chu Chun Fu, Maximilien Levesque, Maylise Nastar, Frédéric Soisson
Abstract:The decomposition of Fe-Cr solid solutions during thermal aging is modeled by Atomistic Kinetic Monte Carlo (AKMC) simulations, using a rigid...
1016
Authors: R.N. Hajra, S. Raju, A.K. Rai, H. Tripathi, S. Saroja, T. Jayakumar
Chapter 5: Physical Metallurgy
Abstract:The influence of magnetic interactions on high temperature thermodynamic stability of Fe-Cr binary system has been analysed in the light of...
468