Abstract

Fe based (Fe_68.2C_5.9Si_3.5B_6.7P_9.6Cr_2.1Mo_2.0Al_2.0) amorphous powder, which is a composition of iron blast cast slag, were produced by a gas atomization process, and sequently mixed with ductile Cu powder by a mechanical ball milling process. The experiment results show that the as-prepared Fe amorphous powders less than 90 mum in size has a fully amorphous phase and its weight fraction was about 73.7%. The as-atomized amorphous Fe powders had a complete spherical shape with very clean surface. Differential scanning calorimetric results of the as-atomized Fe powders less than 90 mum showed that the glass transition, T_g, onset crystallization, T_x, and super-cooled liquid range DeltaT=T_x-T_g were 512, 548 and 36°C, respectively. Fe amorphous powders were mixed and deformed well with 10 wt.% Cu by using AGO-2 high energy ball mill under 500 rpm.

• Keywords: Amorphous powders;Gas atomization;Ball milling process;Composite powders;