The formation of nonequilibrium phase by mechanical alloying (MA) of F
e and B powders in a high energy vibration ball mill has been made for
Fe100-xBx system with x=15, 30, 35, 45, 55 and 70. By using the X-ray
diffraction, magnetic measurement and Mossbauer spectrum methods, it
was revealed that the structure of the MA product varies with milling
time and B contents.