Site occupation preference of Fe in Ni3Al: An atom-probe study

被引：28
作者：
Almazouzi, A
Numakura, H
Koiwa, M
Hono, K
Sakurai, T
机构：
[1] KYOTO UNIV,DEPT MAT SCI & ENGN,KYOTO 60601,JAPAN
[2] TOHOKU UNIV,INST MAT RES,SENDAI,MIYAGI 98077,JAPAN
来源：
INTERMETALLICS | 1997年 / 5卷 / 01期
关键词：
nickel aluminides; based on Ni3Al; ternary alloying; site occupancy; atom microprobe;
D O I：
10.1016/S0966-9795(96)00064-7
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The substitution behaviour of Fe in Ni3Al has been studied by atom-probe microanalysis for Fe concentrations from 0.4 to 1.9 at%. Effects of the matrix composition and annealing temperature have also been examined. Fe atoms have been found to occupy mostly Al sites, regardless of the Fe concentration and the matrix composition. The present observation and the experimental results for higher Fe levels reported in the literature are discussed in the light of the site preference predicted by various empirical rules and theories. (C) 1996 Elsevier Science Limited.
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收藏
页码：37 / 43
页数：7
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