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Tem Specimen Preparation of Tial Alloy Powders Produced by Plasma Rotating Electrode Process

Published online by Cambridge University Press:  21 February 2011

M. Nishida ,
A. Chiba ,
T. Tateyama ,
R. Tomoshige ,
K. Morita  and
E. Aoyagi
M. Nishida
Affiliation:
Department of Materials Science and Resource Engineering, Kumamoto University, 2-39-1 Kurokami Kumamoto 860 Japan
A. Chiba
Affiliation:
Department of Materials Science and Resource Engineering, Kumamoto University, 2-39-1 Kurokami Kumamoto 860 Japan
T. Tateyama
Affiliation:
Department of Materials Science and Resource Engineering, Kumamoto University, 2-39-1 Kurokami Kumamoto 860 Japan
R. Tomoshige
Affiliation:
Department of Materials Science and Resource Engineering, Kumamoto University, 2-39-1 Kurokami Kumamoto 860 Japan
K. Morita
Affiliation:
Department of Materials Science and Resource Engineering, Kumamoto University, 2-39-1 Kurokami Kumamoto 860 Japan
E. Aoyagi
Affiliation:
Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980, Japan
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Abstract

TEM specimens of PREPed Ti -48 at.% Al powders can be prepared reproducibly in a straight-forward manner. There are two kinds of powders with respect to surface and crosssectional morphologies. One is with an Widmanstitten-like structure and or a surface relief of martensitic phase and the other is with a dendritic structure. The primary phase during solidification and relative cooling rate in both the powders are discussed by comparing the macroscopic and microscopic features.

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