CHANGE OF THE STRUCTURE OF THE FE73.5CU1NB3SI13.5B9 ALLOY BY MECHANICAL ALLOYING

The change of the structure by mechanical alloying on the Fe73.5Cu1Nb3 Si13.5B9 nanostructured alloy was studied experimentally. It was found that the nanostructured ribbons obtained from the crystallization of amorphous state by a proper annealing treatment can be changed into am orphous powder via short time milling. By increasing the milling time, the milled powder returns to crystallization and exhibits smaller cry stal size. A still smaller crystal size can be formed if the milled po wder is annealed again. (C) 1997 Acta Metallurgica Inc.