Solid-Solid Phase Transformations in Aluminium Alloys Described by a Multiphase-Field Model

Abstract:

A model for solving isothermal solid-solid phase transformations in multicomponent aluminium alloys is presented. A multiphase-field model for the dissolutions of various phases in an aluminium matrix during homogenization is presented. Driving forces for phase transformations are calculated using data obtained from the commercial software JMatPro and an aluminium database. An integrated concept of the multiphase-field model with solute diffusion is used. A onedimensional model for the simultaneous dissolution of the Mg2Si and Si phases in the aluminium matrix of ternary Al-Mg-Si alloys is introduced. An explicit central finite difference numerical scheme is used for the solution of the time transient phase-field equations and the solute diffusion equations.

• Periodical: Materials Science Forum (Volume 508)
• Pages: 579-584
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.508.579
• Online since: March 2006
• Authors: Igor Kovačević, Božidar Šarler
• Keywords: Aluminium Alloy, Driving Force, Homogenization, Multiphase-Field Model

References

[1] A.L. Dons: Journal of Light Metals Vol. 1 (2001), p.133.

[2] Y.J. Li, L. Arnberg: Acta Materialia Vol. 51 (2003), p.3415.

[3] I. Steinbach, F. Pezzolla, B. Nepster, M. Seesselberg, R. Prieler, G.J. Schmitz, J.L. Rezende: Physica D Vol. 94 (1996), p.134.

[4] I. Steinbach, F. Pezzolla: Physica D Vol. 134 (1999), p.385.

[5] A.A. Wheeler, W.J. Boettinger, G.B. McFAdden: Physical Review E Vol. 45 (1992), p.7424.

[6] R. Kobayashi: Physica D Vol. 63 (1993) p.410.

[7] F.J. Vermolen, C. Vuik, S. Zwaag: Materials Science Engineering Vol. A328 (2002), p.14.

[8] F.J. Vermolen, C. Vuik, S. Zwaag: Materials Science Engineering Vol. A347 (2003), p.265.

[9] D.A. Porter, K.E. Easterling: Phase transformations in metals and alloys (Chapman & Hall London 1995).

[10] M. Hillert, Phase equilibria, Phase Diagrams and Phase Transformations, Their Thermodynamic Basis (Cambridge University Press, Cambridge 1998).

DOI: 10.1017/cbo9780511812781

[11] U. Grafe, B. Bottger, J. Tiaden, S.G. Fries: Scripta Matererialia Vol. 42 (2000), p.1179.

[12] G. Pariser, P. Schaffnit, I. Steinbach, W. Bleck: Steel research Vol. 72 (2001), p.354.

[13] N. Saunders, X. Li, P. Miodownik, J. Ph. Schille: Proc. Symp. Materials Design Approaches and Experiences ( TMS, USA 2001), p.185.

[14] W.J. Boettinger, J.A. Warren, C. Beckermann, A. Karma: Annual Review of Materials Research Vol 32 (2002), p.163.

[15] J. Tiaden, B. Nestler, H.J. Diepers, I. Steinbach: Physica D Vol. 115 (1998), p.73.

[16] W.F. Gale, T.C. Totemeier: Smithells Metals Reference Book (Elsevier Science Ltd 2004).