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Melting Point Measurements for Quasicrystalline Phases

Published online by Cambridge University Press:  28 February 2011

J. A. Knapp  and
D. M. Follstaedt
J. A. Knapp
Affiliation:
Sandia National Laboratories Albuquerque, NM 87185
D. M. Follstaedt
Affiliation:
Sandia National Laboratories Albuquerque, NM 87185
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Abstract

Melting transitions of metastable quasicrystalline phases of Al-Mn have been observed using rapid electron-beam heating of fine-grained icosahedral surface layers. The congruent melting-point for icosahedral Al80 Mn20 was directly measured to be 910±20°C. Heating to higher temperatures shows another transition which is inferred to correspond to the liquidus of the decagonal phase at 965±20°C for 20 at.% Mn. The microstructure and formation kinetics of the decagonal phase are discussed, and its electron diffraction is described.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 74: Symposium A – Beam-Solid Interactions and Transient Processes , 1986 , 167
Copyright
Copyright © Materials Research Society 1987

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