Effect of Cu on Crystallization of Amorphous Alloy Fe_(74)Al_4Ga_2P_(12)B_4Si_4
Nanocrystallization behavior and properties of the amorphous alloys Fe74Al4Ga2P12B4Si4 and Fe73Al4Cu1Ga2 P12B4Si4 annealed isothermally at 500～550℃ for 30 min were investigated. DSC and XRD were used to investigate the effect of Cu on crystallization of amorphous alloy Fe74Al4Ga2P12B4Si4 .The resalts show that Cu makes the crystallization temperature reduce and the glass transition temperature disappear, and quenched nucleus appear in the structure as-cast. The bcc structure α-Fe(Si) solid solution is precipitated in the amorphous matrix.It provides abundant nucleating center , stops crystal grain grow and changes crystallization mode and final crystallization product.