| Numéro |
J. Phys. Colloques
Volume 47, Numéro C2, Mars 1986
32 nd International Field Emission Symposium / 32ème Symposium International d'Emission de Champ
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| Page(s) | C2-221 - C2-225 | |
| DOI | https://doi.org/10.1051/jphyscol:1986233 | |
32 nd International Field Emission Symposium / 32ème Symposium International d'Emission de Champ
J. Phys. Colloques 47 (1986) C2-221-C2-225
DOI: 10.1051/jphyscol:1986233
1 Department of Physics, Tokai University, 1117 Kitakaname, Hiratsuka, Japan
2 Graduate student of Tokai University, Hiratsuka, Japan
3 Department of Materials Science, Tokai University, Hiratsuka, Japan
J. Phys. Colloques 47 (1986) C2-221-C2-225
DOI: 10.1051/jphyscol:1986233
ORDERING OF ATOMS IN γ' PARTICLES OF Ni-15at%Al ALLOY BY FIM OBSERVATION
T. SUZUKI1, A. TACHIKAKE1, Y. MIYAGAWA2, Y. NISHI3 et E. YAJIMA31 Department of Physics, Tokai University, 1117 Kitakaname, Hiratsuka, Japan
2 Graduate student of Tokai University, Hiratsuka, Japan
3 Department of Materials Science, Tokai University, Hiratsuka, Japan
Abstract
The purpose of the present work is to study the ordering of atoms in the γ' particles of a Ni-15at%Al alloys by FIM observation. The specimens are prepared by a liquid-quenched method in an argon atmosphere. There are three stages in the precipitation and the growth process of the γ' particles. The sphere-like γ' particles are observed as small dark spots in the second stage by FIM observation. While the cube-like γ' particles are found in the third stage. By FIM observation the γ' articles is deduced to be higher than that in the sphere-like particles.