2002 Volume 66 Issue 3 Pages 155-158
Ti-2 at%Fe-10 at%Si, Ti-4 at%Fe-10 at%Si and Ti-6 at%Fe-10 at%Si powders were synthesized by mechanical alloying (MA) of pure Ti, Fe and Si powders using a planetary ball milling for 720 ks. After milling for 720 ks, the amount of collectable powder decreased with increasing Fe content in the MA powder. The formation of an amorphous phase was observed at all compositions in this study after 720 ks milling. The crystallization temperature of Ti-2 at%Fe-10 at%Si powder synthesized by MA for 720 ks was higher than that of other MA powders.
Ti-2 at%Fe-10 at%Si powder prepared by milling for 720 ks, which contained amorphous phase, was consolidated using a pulsed current sintering (PCS) apparatus under a high pressure. The compact consolidated at 673 K under a pressure of 1500 MPa was almost densified with the retention of amorphous phase. The pulsed current sintering under a high pressure is a powerful technique to consolidate amorphous powder into a bulk material.
