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Irradiation-based design of mechanically resistant microstructures tuned via multiscale phase-field modeling

par Demange, Gilles;Depinoy, Sylvain ;Lunéville, Laurence;Simeone, David;Pontikis, Vassilis
Référence Scientific reports, 8, 1, 10237
Publication Publié, 2018-12

Article révisé par les pairs

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Résumé :

We present a multi-scale phase field modeling of stationary microstructures produced under 1 MeV krypton ion irradiation in a phase separating concentrated solid solution of silver and copper. We show that the mixture reaches ultimately a stationary micro-structural state made of phase domains with composition and size distribution mapped to the values of the incident flux of particles and of the temperature, variables that help defining a non equilibrium phase-diagram for the irradiated alloy. The modeling predicts the formation of diverse microstructures likely connected to spinodal hardening, thus opening the perspective of the on-purpose tuning of mechanically resistant microstructures and the preparation of metastable alloys with mechanical properties improved by comparison to counterparts obtained via classical thermo-mechanical treatments.