On one hand, the experimental crystallographic data of Chang andRead and the theoretical ones of Lieberman et al. permit a physicalapproach of the martensitic transformation of Au–47.5% at. Cd. On theother hand, an extension to the AuCd crystallographic system of the simplemicromechanical model, developed by Lexcellent et al. for CuZnAlsingle crystals, allows an efficient modelling of the tension-compressionand pure tension tests, performed on single crystals by Nakanishi et al. in the pseudoelastic range.