EFFECTS OF THE ATMOSPHERE ON THE MECHANICAL ALLOYING PROCESS OF AL-25AT-PERCENT-TI MIXED POWDER

Authors
SAJI S YASUDA H YAMANE T
Citation
S. Saji et al., EFFECTS OF THE ATMOSPHERE ON THE MECHANICAL ALLOYING PROCESS OF AL-25AT-PERCENT-TI MIXED POWDER, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 179, 1994, pp. 676-680
Citations number
17
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
179
Year of publication
1994
Pages
676 - 680
Database
ISI
SICI code
0921-5093(1994)179:<676:EOTAOT>2.0.ZU;2-I
Abstract
The mechanical alloying process of Al-25at.%Ti mixed powders has been investigated in Ar gas and in air using an attritor type of ball mill. Refinement of mechanically-alloyed powder particles proceeds faster i n air than in Ar. However, dissolution of Ti into Al powders proceeds more slowly in air than in Ar because of accelerated oxidation of Al p owders in air. The crystal size of mechanically-alloyed composite powd ers becomes smaller in Ar than in air, but crystal strain becomes larg er in air than in Ar.