Eutectic and peritectic solidification patterns

Silvère Akamatsu (1) , Mathis Plapp (2)

1 INSP-E6 - Physico-chimie et dynamique des surfaces
2 LPMC - Laboratoire de physique de la matière condensée

Recent advances in the understanding of eutectic and peritectic two-phase pattern formation under purely diffusive transport are reviewed. The parallel progress of two key techniques, namely, in-situ experimentation with model, low-melting transparent and metallic alloys in thin and bulk samples, and numerical phase-field simulations, is highlighted. Experiments and simulations are interpreted in the light of the theory of non-equilibrium pattern formation phenomena. Focus is put on microstructure selection and morphological transitions, multiscale patterns in ternary alloys, and the influence of crystallographic effects on pattern formation. Open problems, for example on crystallographic effects, irregular eutectics, and peritectic solidification, are outlined.

Mots clés: solidification; eutectic alloys; peritectic alloys; in situ experiments; phase-field modelling

Domaines: Matière Condensée [cond-mat]

Silvère Akamatsu, Mathis Plapp. Eutectic and peritectic solidification patterns. Current Opinion in Solid State and Materials Science, 2016, Recent Advances in Solidification Microstructure- Experiments and Computational Analysis, 20 (1), pp.46-54. ⟨10.1016/j.cossms.2015.10.002⟩. ⟨hal-01469083⟩