Acoustic emission screening of thermo-mechanically processed shape memory alloys in tension and compression – The role of irreversible processes in Fe-Ni-Co-Al-Ti-B SMA
Final Report Abstract
In recent decades, shape memory alloys (SMA) have attracted high attention due to their distinctive and outstanding material properties. SMAs such as Ni-Ti, or Co-Ni-Ga represent the most studied SMAs. These materials demonstrate excellent thermoelastic and functional properties, nevertheless they have high costs, which is one of the largest disadvantages for a widespread industrial application. Iron-based SMAs, such as Fe-Ni-Co-Al-X (X = Ta, Ti, Nb) and Fe-Mn-Al-Ni, are more cost-effective than conventional SMAs and they can be produced by process routes adopted from the steel making industry. This opens the way to broad industrial applications and the production of larger quantities of material in the future, such as for actuators or damper technologies for constructions in areas where earthquakes are possible. Many studies have investigated both the orientation dependency as well as the tension-compression asymmetry during quasi-static tests. The main objective of this project was to investigate irreversible processes as well as their influence on the functional degradation of the Febased SMA alloy Fe-Ni-Co-Al-Ti during the martensitic phase transformation using the acoustic emission measurement method.
Publications
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In situ characterization of the functional degradation of a [ 00 1¯ ] orientated Fe–Mn–Al–Ni single crystal under compression using acoustic emission measurements. Acta Materialia, 220, 117333.
Weidner, Anja; Vinogradov, Alexei; Vollmer, Malte; Krooß, Phillip; Kriegel, Mario J.; Klemm, Volker; Chumlyakov, Yuri; Niendorf, Thomas & Biermann, Horst
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Functional Properties of Highly Textured Fe–Ni–Co–Al–Ti–B Shape Memory Alloy Wires. Shape Memory and Superelasticity, 9(3), 531-541.
Sobrero, C.; Remich, V.; Cassineiro, J.; Giordana, M. F.; Abreu Faria, G.; Liehr, A.; Freudenberger, J.; Niendorf, T. & Krooß, P.
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On the Impact of γ´ Precipitates on the Transformation Temperatures in Fe–Ni–Co–Al–Ti–B Shape Memory Alloy Wires. Shape Memory and Superelasticity, 10(1), 37-44.
Cassinerio, Juan; Giordana, Maria Florencia; Zelaya, Eugenia; Remich, Viktor; Krooß, Philipp; Freudenberger, Jens; Niendorf, Thomas & Sobrero, César E.
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On the influence of crystallographic orientation on superelasticity - Fe-Mn-Al-Ni shape memory alloys studied by advanced in situ characterization techniques. Materials Science and Engineering: A, 871, 144830.
Lehnert, R.; Müller, M.; Vollmer, M.; Krooß, P.; Korpala, G.; Prahl, U.; Wendler, M.; Volkova, O.; Niendorf, T.; Biermann, H. & Weidner, A.
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Complementary In Situ Characterization of Superelasticity in Fe–Mn–Al–Ni–Ti Shape Memory Alloys by Acoustic Emission, Digital Image Correlation and Infrared Thermography. Shape Memory and Superelasticity, 10(3), 267-288.
Müller, M.; Lehnert, R.; Motylenko, M.; Krooß, P.; Vollmer, M.; Niendorf, T.; Biermann, H. & Weidner, A.
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On the Effect of Chemical Heterogeneity on the Shape Memory Performance of Fe–Ni–Co–Al–Ti Single Crystals. Shape Memory and Superelasticity, 10(4), 452-459.
Remich, V.; Lauhoff, C.; Kriegel, M. J.; Motylenko, M.; Niendorf, T. & Krooß, P.
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Unraveling factors affecting the reversibility of martensitic phase transformation in FeNiCoAlTi shape memory alloys: Insights from HR-EBSD and acoustic emission analysis. Acta Materialia, 276, 120146.
Lehnert, R.; Remich, V.; Gerstein, G.; Motylenko, M.; Müller, M.; Krooß, P.; Niendorf, T.; Biermann, H. & Weidner, A.
