Non-thermal equilibrium crystal structure and Vickers hardness of FeRh intermetallic compound irradiated with energetic heavy ions

抄録

Fe-45 at.% Rh bulk intermetallic compounds with ordered B2 structure were irradiated with 16 MeV Au ions at room temperature. The irradiation-induced phase transformation was examined by means of X-ray diffraction (XRD). By the Au irradiation, the degree of order for B2 structure decreased, instead ordered L1₀ and disordered A1 structures appeared. The change of crystal structure was considered in terms of the thermal spike and the martensitic transformation induced by the energetic heavy ion irradiation. Also the effect of the Au ion irradiation on hardness of the FeRh intermetallic compound was discussed.