Effect of ordering on the magnitude of volume change and the shape memory effect upon the martensitic transformation in the Fe3Pt alloy

The influence of a heat treatment on the behavior of the volume effect and the degree of shape recovery upon the martensitic transformation for the Fe-24 at % Pt alloy has been studied. It has been found that an increase in the time of annealing at 650°C from 0 to 300 min leads to a continuous decre...

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Bibliographic Details
Published in:Physics of metals and metallography 2011-09, Vol.112 (3), p.277-282
Main Authors: Koval’, Yu. N., Ponomareva, S. A.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Diffusion
Materials Science
Metallic Materials
Phase Transformations
Structure
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Summary:The influence of a heat treatment on the behavior of the volume effect and the degree of shape recovery upon the martensitic transformation for the Fe-24 at % Pt alloy has been studied. It has been found that an increase in the time of annealing at 650°C from 0 to 300 min leads to a continuous decrease in Δ V / V from 1.26% in the quenched condition to 0.987% for τ = 300 min. The characteristic temperatures of the martensitic transformation decrease, and the hysteresis passes through a minimum. The shape memory effect in the heat-treated samples after τ = 40 min achieves 100%.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X11030239