Magnetic Properties of Gas Atomized Powders of Al(sup 74)Mn(sup 20)Si(sup 6)

摘要

Rapidly quenched powders of Al74Mn20SI6 were prepared by the ultrasonic gas atomization technique. Particles ranged from less than 40 micro to greater than 150 micro. The smaller particles were found to be primarily of the icosahedral phase. Larger powders showed an increasing proportion of the beta-Al-Mn-Si phase. There was no evidence for the presence of alpha-AlMnSi commonly found in crystallized icosahedral AlMnSi alloys. Magnetic measurements showed the existence of a local Mn moment in all alloys. This moment was found to be 1.27 micro B for the icosahedral phase and 0.63 mirco B for the beta phase. Keywords: Aluminum alloys; Manganese; Silicon; Reprints. (mgm)