Effects of Heavy Ion Irradiation on Short-Range Order of Fe―Cr―P―C Amorphous Alloys Investigated by Moessbauer and DSC Measurements

摘要

Rapidly quenched Fe―Cr―P―C amorphous alloys irradiated with 209 MeV energy ~(84)Kr ions were investigated by Moessbauer spectroscopy, X-ray diffraction, and differential scanning calori-metry measurements. Significant changes were found between Moessbauer spectra of the irradiated and non-irradiated amorphous alloys. The changes were analysed by the hyperfine field distribution method, too. The crystallisation temperature as well as the phase composition at a certain stage of crystallisation were found to be different in the non-irradiated and irradiated samples. These results reflect the changes in the short-range ordering due to the irradiation with energetic heavy ions.