24.06.2020 | Communication | Ausgabe 9/2020
Hydrogen Enhances Shape Memory Effect of a Ferrous Face-Centered Cubic Alloy
- Zeitschrift:
- Metallurgical and Materials Transactions A > Ausgabe 9/2020
Wichtige Hinweise
Manuscript submitted April 14, 2020.
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Abstract
This paper marks the first report on the fact that interstitial hydrogen improves the shape recovery property of an Fe-based face-centered cubic alloy, regardless of pre-strain level. The maximum shape recovery strain when using hydrogen was increased from 2.8 to 3.4 pct at an approximately 7 pct pre-strain. The enhancement of the shape memory effect by hydrogen stems from (1) increasing deformation-induced martensite fraction, (2) thinning of martensite plates, and (3) increasing the number of martensite plates.
