Calculation of the elastic energy of a solid solution

Volker Mohles (1) , Barend Thijsse (2) , Emmanuel Jannot (3)

1 RWTH
2 Materials Science and Engineering
3 Institute of Physical Metallurgy and Metal Physics

A corrected version of the Microscopic Elasticity (ME) theory is proposed. Previous versions of this theory, like that of Khachaturyan, contained a discrepancy which caused severe problems in certain applications. One such case is the simulation of precipitation of secondary phases with long-ranged elastic interactions: Monte-Carlo simulations using the published ME theories to account for the elastic stresses profoundly fail to predict the precipitation of plate-like particles, like Guinier-Preston-Zones in Al-Cu-alloys. The quoted discrepancy is resolved, so that Monte-Carlo simulations using the new ME theory comply with all theoretical expectations. The revised theory also introduces new parameters such that real materials can be considered more accurately.

Mots clés: Physical Sciences

Volker Mohles, Barend Thijsse, Emmanuel Jannot. Calculation of the elastic energy of a solid solution. Philosophical Magazine, 2010, 90 (07-08), pp.963-975. ⟨10.1080/14786430903213312⟩. ⟨hal-00581017⟩