Einfluss von thermomechanischer Behandlung auf die Mikrostruktur von pseudoelastischem NiTi am Beispiel von Komponenten für Brillengestelle
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M. Frotscher
Matthias Frotscher born 09-10-1977 Dresden, studies of Mechanical Engineering, branch: Materials, Ruhr-University Bochum; diploma thesis on Metallographic Study on the Casting Processing of TiSi by Means of Induction-Melting in Graphite Crucibles, since 2006 working on PhD thesis: Highly Flexible NiTi Shape-Memory Alloy Components for Medical Applications Materials Scientific Studies on Microstructures and Mechanical Properties.
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C. Menges
Kurzfassung
Eines der in der Literatur am häufigsten aufgeführten Anwendungsbeispiele für Nickel-Titan-Formgedächtnislegierungen (NiTi-FGL) sind Komponenten für Brillengestelle [1, 2, 3]. Dabei werden insbesondere die Nasen- und Seitenbügel, sowie Verbindungselemente aus diesem Werkstoff hergestellt [4, 5, 6]. Für den Nutzer hat dies den großen Vorteil einer erhöhten Flexibilität bei erzwungener Verformung zum Beispiel beim Verbiegen oder Herunterfallen der Brille. Im Rahmen der vorliegenden Arbeit wurden Brillenkomponenten verschiedener Hersteller aus NiTi mit Hilfe von rasterelektronenmikroskopischen Methoden untersucht. Die Proben wurden dabei verschiedenen thermomechanischen Behandlungen unterzogen, um deren Auswirkung auf die Mikrostruktur und sowie auf die funktionellen und strukturellen Eigenschaften zu charakterisieren.
Abstract
One of the most common examples of the use of nickel-titanium shape memory alloys (NiTi-SMA) cited in the literature is as components for spectacle frames [1, 2, 3]. In particular the nose bridge, temples and hinge elements may all be made from this type of material [4, 5, 6]. For the spectacle wearer, this offers the great advantage of increased flexibility in the event of accidental deformation as a result of the bending or dropping the spectacles. In the course of the work presented in this article, spectacle components made of NiTi alloy from different manufacturers were investigated using Scanning Electron Microscopy (SEM). The specimens examined were beforehand subjected to various different thermo-mechanical treatments in order to establish the relative effects of each on the microstructure and thus the functional and structural properties of each type of component.
About the author
Matthias Frotscher born 09-10-1977 Dresden, studies of Mechanical Engineering, branch: Materials, Ruhr-University Bochum; diploma thesis on Metallographic Study on the Casting Processing of TiSi by Means of Induction-Melting in Graphite Crucibles, since 2006 working on PhD thesis: Highly Flexible NiTi Shape-Memory Alloy Components for Medical Applications Materials Scientific Studies on Microstructures and Mechanical Properties.
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Übersetzung: P. Tate
Literatur/References
[1] Wu, M. H.; Schetky, L.: Industrial Applications for Shape Memory Alloys in North America, Materials Science Forum 327328 (2000), 9-1610.4028/www.scientific.net/MSF.327-328.9Search in Google Scholar
[2] McKelvey, A. L.; Ritchie, R. O.: Fatigue-Crack Growth Behavior in the Superelastic and Shape-Memory Alloy Nitinol, Metall. Mater. Trans. 32A (2001), 73110.1007/s11661-001-1008-7Search in Google Scholar
[3] Liu, L. H.; Yang, H.; Wang, L. M.; Zhao, L. C.: The application and commercialization of NiTi shape memory alloy in China, Rare Metal Materials And Engineering 30 (2001): 121-124Search in Google Scholar
[4] Zidner, R. B.; Krumme, J. F.: Eyeglass Frame including Shape Memory Elements, US patent number 4896955 (1990)Search in Google Scholar
[5] Rossin, P.: Eyeglasses and parts thereof made with specially processed NiTi shape memory alloy, US patent number 6557993 (2003)Search in Google Scholar
[6] European Patent Specification by the European Patent Office: Eyeglass frame including shape-memory elements, Publication No. EP 0 310 628 B1, Date of publication: 07.04.93Search in Google Scholar
[7] Hornbogen, E.: On the term of Pseudoelasticity, Z. Metallkd. 86 (5), 341-344 (1995)10.1515/ijmr-1995-860508Search in Google Scholar
[8] D. Treppmann, E. Hornbogen, D. Wurzel: Thermomechanical Treatment of Shape Memory Alloys by Ausforming and Marforming, Z. Metallkd. 89 (2), 126-134 (1998)Search in Google Scholar
[9] ASTM Standard 2004-3: Standard Test method for transformation temperature Measurement of Nickel-Titanium Shape Memory Alloys by Thermal Analysis, 2003Search in Google Scholar
[10] EN ISO 6507-1 (früher DIN 50133): Prüfung metallischer Werkstoffe – Härteprüfung nach Vickers, 1-7Search in Google Scholar
[11] Frenzel, J.; Zhang, Z.; Neuking, K.; Eggeler, G.: High Quality Vacuum Induction Melting of Small Quantities of NiTi Shape Memory Alloys in Graphite Crucibles, J. Alloys Compounds 385 (2004), 214-22310.1016/j.jallcom.2004.05.002Search in Google Scholar
[12] Khelaoui, F.; Guénin, G.: Influence of the recovery and recrystallization processes on the martensitic transformation of cold worked equiatomic Ti-Ni alloy, Mat. Sci. Eng. A355 (2003), 292-29810.1016/S0921-5093(03)00068-6Search in Google Scholar
[13] Filip, P.; Mazanec, K.: Influence of work hardening and heat treatment on the substructure and deformation behaviour of TiNi shape memory alloys, Script. Met. et Mat. (1995), Vol. 32, No. 9, 1375–138010.1016/0956-716X(95)00174-TSearch in Google Scholar
[14] Miller, D. A.; Lagoudas, D. C.: Influence of cold work and heat treatment on the shape memory effect and plastic strain development of NiTi, Mat. Sci. Eng. A308 (2001), 161–17510.1016/S0921-5093(00)01982-1Search in Google Scholar
[15] Allafi, J. K.: Mikrostrukturelle Untersuchungen zum Einfluss von thermomechanischen Behandlungen auf die martensitischen Phasenumwandlungen an einer Ni-reichen NiTi Formgedächtnislegierung, Dissertation an der Ruhr-Universität Bochum, Bochum 2002, Shaker Verlag, Aachen 2002, 15-20Search in Google Scholar
[16] Fan, G.; Chen, W.; Yang, S.; Zhu, J.; Ren, X.; Otsuka, K.: Origin of abnormal multi-stage martensitic transformation behaviour in aged Ni-rich Ti-Ni shape-memory alloys, Acta Mater. 52 (2004), 4351-436210.1016/j.actamat.2004.06.002Search in Google Scholar
[17] Antonin, A.; Khalil-Allafi, J.; Eggeler, G.: Multi-step martensitic transformations in Ni-rich NiTi alloys, an in-situ transmission electron microscopy investigation, Phil. Mag. 83, 3 (2003), 339-36310.1080/0141861021000034531Search in Google Scholar
[18] Tang, W.; Sundmann, B.; Sandström, R.; Quiu, C.: New Modelling of the B2 Phase and its associated Martensitic Transformation in the Ti-Ni System, Acta Mater. 47 (1999), 3457-346810.1016/S1359-6454(99)00193-7Search in Google Scholar
[19] Otsuka, K.; Wayman, C. M.: Ti–Ni shape memory alloys, in Shape Memory Alloys, Cambridge University Press (1999), 49–96Search in Google Scholar
[20] Funakubo, H. (editor): Shape Memory Alloys, Precision Machinery and Robotics, Vol.1 (1987), 39-46Search in Google Scholar
[21] Hornbogen, E., Kobus, E.: A metallographic study of plastic deformation of martensitic NiTi, Z. Metallkd. 87 (6), 442-447 (1996)10.1515/ijmr-1996-870605Search in Google Scholar
[22] Olier, P.; Barcelo, F.; Bechade, J. L.; Brachet, J. C.; Levefre, E.; Guenin, G.: Effects of Impurities Content (Oxygen, Carbon, Nitrogen) on Microstructure and Phase Transformation Temperatures of Near Equiatomic TiNi Shape Memory Alloys, J. Phys. IV France 7 (1997), C5-143 – C5-14810.1051/jp4:1997522Search in Google Scholar
[23] Frenzel, J.; Zhang, Z.; Neuking, K.; Eggeler, G.: High Quality Vacuum Induction Melting of Small Quantities of NiTi Shape Memory Alloys in Graphite Crucibles, J. Alloys Compounds 385 (2004), 214-22310.1016/j.jallcom.2004.05.002Search in Google Scholar
© 2007 Carl Hanser Verlag, München
Articles in the same Issue
- Contents
- Gefügeentwicklung durch Wärmebehandlung an Magnesiumlötverbindungen
- Einfluss von thermomechanischer Behandlung auf die Mikrostruktur von pseudoelastischem NiTi am Beispiel von Komponenten für Brillengestelle
- TEM Study of Bainitic Low-Carbon HSLA Steel: The Orientation Relationships of Cementite
Articles in the same Issue
- Contents
- Gefügeentwicklung durch Wärmebehandlung an Magnesiumlötverbindungen
- Einfluss von thermomechanischer Behandlung auf die Mikrostruktur von pseudoelastischem NiTi am Beispiel von Komponenten für Brillengestelle
- TEM Study of Bainitic Low-Carbon HSLA Steel: The Orientation Relationships of Cementite
