Impact of test temperature on functional degradation in Fe-Ni-Co-Al-Ta shape memory alloy single crystals

Sobrero, C. and Lauhoff, C. and Langenkämper, D. and Somsen, C. and Eggeler, G. and Chumlyakov, Y.I. and Niendorf, T. and Krooß, P.

Volume: 291 Pages:
DOI: 10.1016/j.matlet.2021.129430
Published: 2021

The present paper focuses on the analysis of functional fatigue properties in 〈001〉-oriented single crystalline Fe-Ni-Co-Al-Ta shape memory alloys. Superelastic cycling experiments up to 4.5% at different temperatures were conducted and revealed excellent cyclic stability at lower testing temperatures. Transmission electron microscopy observations shed light on the influence of precipitation and dislocation activity on functional stability. © 2021

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