MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Pulsed Current Sintering of Amorphous Titanium Alloy Powder Synthesized by Mechanical Alloying Process
Keizo KobayashiAkihiro MatsumotoToshiyuki NishioKimihiro Ozaki
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2003 Volume 44 Issue 1 Pages 144-147

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Abstract

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. The amount of collectable powder milled for 720 ks decreased with increasing Fe content in the MA powder. An amorphous phase was generated for all of the powders milled for 720 ks. The crystallization temperature of Ti–2 at%Fe–10 at%Si powder synthesized by MA for 720 ks was higher than that of the 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 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.

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© 2003 The Japan Institute of Metals and Materials
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