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Cu-Al-Ni Shape Memory Single Crystal Wires with High Transformation TemperatureCN-250X is a new material with higher performance than Nickel-Titanium Shape Memory Alloy (SMA). For space mechanisms, the main disadvantage of Nickel-Titanium Shape Memory Alloy is the limited transformation temperature. The new CN-250X Nimesis alloy is a Cu-Al-Ni single crystal wire available in large quantity because of a new industrial process. The triggering of actuators made with this Cu-Al-Ni single crystal wire can range from ambient temperature to 200 C in cycling and even to 250 C in one-shot mode. Another advantage of CN-250X is a better shape recovery (8 to 10%) than Ni-Ti (6 to 7%). Nimesis is the first company able to produce this type of material with its new special industrial process. A characterization study is presented in this work, including the two main solicitation modes for this material: tensile and torsion. Different tests measure the shape recovery of Cu-Al-Ni single crystals wires during heating from room temperature to a temperature higher than temperature of end of martensitic transformation.
Document ID
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Hautcoeur, Alain
(Nimesis Technology Mecleuves, France)
Fouché, Florian
(Nimesis Technology Mecleuves, France)
Sicre, Jacques
(Centre National d'Etudes Spatiales Toulouse, France)
Date Acquired
June 30, 2016
Publication Date
May 4, 2016
Publication Information
Publication: 43rd Aerospace Mechanisms Symposium
Subject Category
Mechanical Engineering
Distribution Limits
Public Use Permitted.
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