Local structure of high-coercivity Fe-Ni-Al alloys

Results of hard magnetic Fe-Ni-Al alloys after various thermal processing local structure researches by method of EXAFS-spectroscopy with use of synchrotron radiation at temperature 77 K are presented. It is established, that during cooling a firm solution with critical speed reorganization of a local environment of nickel relative to quickly tempered sample owing to stratification of a firm solution is observed. The subsequent aging at 780?C practically restores local structure, characteristic for quickly tempered sample, keeping thus rather high coercitive force.