Effect of Stress-Induced Martensite Aging on Martensite Variant Reorientation Strain in NiMnGa Single Crystals

This work presents the effect of stress-induced martensite aging (SIM-aging) on the functional properties of Ni 53 Mn 25 Ga 22 (at.%) single crystals, oriented along the [001] L21 -direction. The most effective regime of SIM-aging occurred under a compressive stress of 175 MPa along the [110] L21 ||...

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Bibliographic Details
Published in:Shape memory and superelasticity : advances in science and technology 2020-03, Vol.6 (1), p.29-34
Main Authors: Panchenko, Elena, Timofeeva, Ekaterina, Pichkaleva, Maria, Tokhmetova, Aida, Surikov, Nikita, Tagiltsev, Anton, Chumlyakov, Yuri
Format: Article
Language:English
Subjects:
Aging
Aging (artificial)
Characterization and Evaluation of Materials
Chemistry and Materials Science
Compressive properties
Crystal structure
High temperature
Icfsma 2019
Martensite
Martensitic transformations
Materials Science
Rubber
Shape effects
Shape memory
Single crystals
Tensile strain
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Summary:This work presents the effect of stress-induced martensite aging (SIM-aging) on the functional properties of Ni 53 Mn 25 Ga 22 (at.%) single crystals, oriented along the [001] L21 -direction. The most effective regime of SIM-aging occurred under a compressive stress of 175 MPa along the [110] L21 ||[100] L10 -direction at 423 K, for 2 h, which induced the high-temperature two-way shape memory effect with a reversible tensile strain of +9.0%, causing the jumping of the sample during cooling/heating in free state, and a rubber-like behavior with a giant reversible compression strain up to − 13.2% caused by L1 0 -martensite variant reorientation.
ISSN:2199-384X
2199-3858
DOI:10.1007/s40830-019-00242-5