B2 long-range order in mechanically alloyed Fe53.3−0.6xCo46.7−0.4xSnx (2 ≤ x ≤ 26) annealed at moderate temperatures

Recent interest in Fe–Co–Sn alloys stems from Heusler alloys. A Co 2 FeSn Heusler alloy is found to be unstable relative to other phases from ab initio calculations. However, it may be synthesized by non-equilibrium techniques. The present work focuses similarly on metastable ordered phases in terna...

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Bibliographic Details
Published in:Journal of materials science 2016-06, Vol.51 (12), p.5775-5790
Main Authors: Malaman, B., Le Caër, G., Costa, B. F. O.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Materials Science
Original Paper
Polymer Sciences
Solid Mechanics
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Summary:Recent interest in Fe–Co–Sn alloys stems from Heusler alloys. A Co 2 FeSn Heusler alloy is found to be unstable relative to other phases from ab initio calculations. However, it may be synthesized by non-equilibrium techniques. The present work focuses similarly on metastable ordered phases in ternary Fe–Co–Sn alloys. First, disordered phases of Sn in near-equiatomic Fe–Co are prepared by high-energy ball-milling. As-milled powders are then annealed to possibly produce long-range ordered phases. As-milled powders, of overall composition Fe 53.3−0.6 x Co 46.7−0.4 x Sn x (2 ≤  x  ≤ 34), consist of a single supersaturated bcc phase for x  
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-016-9879-6