ICAMS / Interdisciplinary Centre for Advanced Materials Simulation


Growth and ripening under mechanochemical coupling

Date: 11.10.2016
Place: 8th International Conference on Multiscale Materials Modeling, Dijon, France

Reza Darvishi Kamachali

The diffusion-controlled growth and ripening of precipitates are well studied in many aging materials. The challenge, however, remains unfinished to encounter simultaneous chemical and elastic effects with cross-coupling between them as demonstrated recently [1,2]. Theoretical derivations and mesoscale phase-field simulations of growth and ripening in shape memory alloys and Al systems are performed to take these effects into account. Kinetics and statistical analysis are conducted to understand the effect of elasticity and mechanochemical coupling. The results show that the growth generally slows down at the presence of elasticity and coupling. Inverse ripening at the presence the mechanochemical effect is observed.

1] R. Darvishi Kamachali, E. Borukhovich, N. Hatcher and I Steinbach; "DFT-supported phase-field study on the effect of mechanically driven fluxes in Ni4 Ti3 precipitation"; MSMSE 22 (2014) 034003.
[2] R. Darvishi Kamachali, E. Borukhovich, O. Shchyglo and I. Steinbach; “Solutal gradients in strained equilibrium”; Phil. Mag. Let. 93 (2014) 680.

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