Long-term superelastic cycling at nano-scale in Cu-Al-Ni shape memory alloy micropillars

Journal Article · Mon Jan 06 00:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4860951· OSTI ID:22257014

Gómez-Cortés, J. F. ^[1]; López, G. A.; Nó, M. L. ^[2]; Jiao, C. ^[3]

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1. Dpto. Física Materia Condensada, Facultad de Ciencia y Tecnología, Univ. del País Vasco UPV/EHU, Apdo. 644, 48080 Bilbao (Spain)
2. Dpto. Física Aplicada II, Facultad de Ciencia y Tecnología, Univ. del País Vasco UPV/EHU, Apdo. 644, 48080 Bilbao (Spain)
3. FEI, Achtseweg Noord 5, 5651 GG Eindhoven (Netherlands)

Superelastic behavior at nano-scale has been studied along cycling in Cu-Al-Ni shape memory alloy micropillars. Arrays of square micropillars were produced by focused ion beam milling, on slides of [001] oriented Cu-Al-Ni single crystals. Superelastic behavior of micropillars, due to the stress-induced martensitic transformation, has been studied by nano-compression tests during thousand cycles, and its evolution has been followed along cycling. Each pillar has undergone more than thousand cycles without any detrimental evolution. Moreover, we demonstrate that after thousand cycles they exhibit a perfectly reproducible and completely recoverable superelastic behavior.

• OSTI ID: 22257014
• Journal Information: Applied Physics Letters, Vol. 104, Issue 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
ALUMINIUM
COPPER
ION BEAMS
MILLING
MONOCRYSTALS
NICKEL
PHASE TRANSFORMATIONS
SHAPE MEMORY EFFECT