Dynamic Mechanism of Mechanical Crystallization of Amorphous FeMoSiB Alloy

Crystallization processes and mechanism of amorphous (Fe0.99Mo0.01)78Si9B13 (FMSB) alloy induced by mechanical milling were studied. We suggested that local high pressure has influence on mechanical crystallization, and discussed the effect of local high pressure on amorphous crystallization. It was found that crystallization processes and its products of amorphous FMSB alloy were related closely to milling intensity and time. Only a crystallization product, -Fe(Mo,Si) solid solution occurs in the case of lower milling intensity, however, Fe3B and Fe2B phases appear besides the -Fe(Mo,Si) solid solution in the case of higher milling intensity. We suggested that the crystallization mechanism is the co-interaction due to local high pressure and temperature induced by ball collisions. It is also found that mechanical milling has an important influence on both thermal crystallization temperature under normal pressure of amorphous FMSB and thermal crystallization results.