Investigation and Composition Characterization of a 'NiTi-like' Alloy Combining High Temperature Shape Memory and High Entropy

Autor: Paul Lohmuller, Etienne Patoor, Fodil Meraghni, Pascal Laheurte, Sophie Berveiller, Laurent Peltier
Přispěvatelé: Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux (LEM3), Université de Lorraine (UL)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)-Centre National de la Recherche Scientifique (CNRS), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Georgia Tech Lorraine [Metz], Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Georgia Institute of Technology [Atlanta]-CentraleSupélec-Ecole Nationale Supérieure des Arts et Metiers Metz-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
matière Condensée: Science des matériaux [Physique]
High temperature shape memory alloys
Materials science
Matériaux [Sciences de l'ingénieur]
Alloy
02 engineering and technology
Temperature cycling
engineering.material
01 natural sciences
7. Clean energy
Shape memory behavior
[SPI.MAT]Engineering Sciences [physics]/Materials
Thermal fatigue
[SPI]Engineering Sciences [physics]
Differential scanning calorimetry
Mécanique: Génie mécanique [Sciences de l'ingénieur]
Matériaux [Chimie]
0103 physical sciences
Aerospace actuator
General Materials Science
Composite material
ComputingMilieux_MISCELLANEOUS
010302 applied physics
High entropy alloys
Shape-memory alloy
[CHIM.MATE]Chemical Sciences/Material chemistry
021001 nanoscience & nanotechnology
[SPI.MECA.GEME]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanical engineering [physics.class-ph]
Mechanics of Materials
Nickel titanium
Martensite
Diffusionless transformation
Martensitic transformation
engineering
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
0210 nano-technology
Zdroj: Shape Memory and Superelasticity
Shape Memory and Superelasticity, 2020, 6 (2), pp.273-283. ⟨10.1007/s40830-020-00290-2⟩
Shape Memory and Superelasticity, Springer, 2020, 13p. ⟨10.1007/s40830-020-00290-2⟩
ISSN: 2199-384X
2199-3858
Popis: International audience; New high temperature shape memory alloyswith five or more elements are under development and present attractive performances for several functional applications. These active metallic materials are called high entropy and high temperature shape memory alloys (HE-HT-SMAs). This work deals with the characterization of an alloy that combines high temperature shape memory effect and high entropy effect features, a NiCuTiHfZr alloy. The evolution of the phase transformation and the shape memory effect during thermal fatigue was compared with a ternary alloy NiTiZr. Ingots were prepared in a cold crucible and alloys were characterized after thermal cycling at 600 K without a protective gas atmosphere. Optical microscope, X-ray diffraction, and scanning elec- tron microscopy observations showed the presence of martensite in this unpublished alloy at room temperature. The differential scanning calorimetry (DSC) tests showed that martensitic transformation takes place at high temperature. High temperature thermal cycling was performed during a three-point bending tests under constant load without a protective atmosphere. Thermomechanical results showed that high entropy effects increase the operating behavior at high temperature. Hence this new composition of NiCuTiHfZr alloy can be used as an actuator for aerospace and aeronautic application.
Databáze: OpenAIRE
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