Atomic Ordering and Parameters of Martensitic Transformation in Fe-based Alloys

Evolution of martensitic transformation (MT) start temperatures, hysteresis and shape recovery in Fe-Ni, Fe-Ni-Sm and Fe-Pt alloys with ordering has been studied. Atomic ordering and position disordering (alloying) are determined as factors of control over mentioned parameters. It is found out that...

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Bibliographic Details
Published in:Materials today : proceedings 2015, Vol.2, p.S739-S742
Main Authors: Koval, Y., Ponomaryova, S., Odnosum, V., Ponomaryov, O.
Format: Article
Language:English
Subjects:
atomic ordering
Fe-based alloys
Martensitic transformation
MT start temperatures
position disordering (alloying)
shape recovery
temperature hysteresis
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Summary:Evolution of martensitic transformation (MT) start temperatures, hysteresis and shape recovery in Fe-Ni, Fe-Ni-Sm and Fe-Pt alloys with ordering has been studied. Atomic ordering and position disordering (alloying) are determined as factors of control over mentioned parameters. It is found out that samarium alloying increases MT start temperatures and improves shape recovery. Quenching from 800-900° C into room temperature water is the most appropriate solution treatment to acquire extreme parameters of martensitic transformation: minimum in MT temperature hysteresis and shape recovery.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2015.07.388