Inhomogeneous martensitic transformation behavior and elastocaloric effect in a bicrystal Cu-Al-Mn shape memory alloy

Inhomogeneous martensitic transformation behavior and elastocaloric effect in a bicrystal Cu-Al-Mn shape memory alloy

The inhomogeneous distributions of strain and temperature of a bicrystal Cu-Al-Mn shape memory alloy were investigated. A large strain gradient was observed near the grain boundary. During the compression test, the top and bottom grains underwent outward and inward out-of-plane deformations, respect...

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Veröffentlicht in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2021-01, Vol.800, p.140386, Article 140386
Hauptverfasser: Lu, Nian-Hu, Chen, Chih-Hsuan
Format: Artikel
Sprache:eng
Schlagworte:
Bicrystals
Compression tests
Copper
Copper base alloys
Cracks
Digital image correlation
Elastocaloric effect
Grain boundaries
Grains and interfaces
Manganese
Martensitic transformations
Shape memory alloys
Strain analysis
Stress/strain measurements
Superelasticity
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Beschreibung
Zusammenfassung:The inhomogeneous distributions of strain and temperature of a bicrystal Cu-Al-Mn shape memory alloy were investigated. A large strain gradient was observed near the grain boundary. During the compression test, the top and bottom grains underwent outward and inward out-of-plane deformations, respectively, which led to the formation of cracks.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2020.140386