Modelling of Microstructure Evolution during Thermal Processes – A Hybrid Deterministic-Probabilistic Approach

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Abstract:

The present contribution focuses on a recently developed model of microstructure evolution. The model is based on a phase field approach, which takes account of kinetic effects in solidification of alloys and intermetallic compounds. It further incorporates crystal orientation as an additional field variable, which evolves through a Monte-Carlo algorithm. Combination of the phase field approach with Monte-Carlo algorithm allows for physically meaningful and computationally effective simulation of microstructure in polycrystalline and intermetallic forming systems. The paper includes various examples of simulated microstructures in different thermal processes.

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Materials Science Forum (Volumes 704-705)

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63-70

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December 2011

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] W.J. Boettinger, J.A. Warren, C Beckermann and A Karma: Annu. Rev. Mater. Res. Vol. 32(2002), p.163.

Google Scholar

[2] K . Asp and J. Årgen: Acta Materialia Vol. 54(2006), p.1214.

Google Scholar

[3] H. Assadi: Modelling & Simulation in Mater. Sci. & Eng. Vol. 14(2006), p.963.

Google Scholar

[4] H. Assadi: Acta Materialia Vol. 55(2007), p.5225.

Google Scholar

[5] The original formalism is given by S.M. Allen, J.W. Cahn: Acta Metall Vol. 27(1979), p.1085 Ref.

Google Scholar

[1] contains examples of phase-field modelling using this formalism.

Google Scholar

[6] H. Assadi, in: Solidification and crystallization, edited by D.M. Herlach, chapter 3,. Wiley-VCH (2004).

Google Scholar

[7] H. Assadi, A.A. Shirzadi and E.R. Wallach: Acta Materialia Vol. 49(2001), p.31.

Google Scholar

[8] W.J. Boettinger and M.J. Aziz: Acta Metallurgica Vol. 37(1989), p.3379.

Google Scholar

[9] H. Assadi and A.L. Greer: Nature Vol. 383(1996), p.150.

Google Scholar

[10] H. Assadi and A.L. Greer: Mater. Res. Soc. Symp. Proc. Vol. 398(1996), p.75.

Google Scholar