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

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Abstract

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.

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Demange, G., Dépinoy, S., Lunéville, L., Simeone, D., & Pontikis, V. (2018). Irradiation-based design of mechanically resistant microstructures tuned via multiscale phase-field modeling. Scientific Reports, 8(1). https://doi.org/10.1038/s41598-018-28685-3

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