Study of the effect of cooling/heating rate on the thermal properties of ni-ti alloy (SMA) after annealing at different parameters
Krzysztof Kuś
University of Warmia nad Mazury in OlsztynAbstract
The research focused on evaluating the effect of different scanning calorimetric (DSC) rates of the cooling/heating process on changes in the phase transformation parameters of Ni-Ti shape memory alloy (SMA) after its prior annealing at different temperatures. The material used in the study was a spring SMA actuator, from which samples were taken for DSC testing. Initial study included the identification of the chemical composition of the material. All phase transformation temperatures were estimated from DSC curves using the tangent intersection method, as a commonly accepted way. Following annealing at various selected temperatures, changes in the shapes of the calorimetric profiles recorded during heating and cooling of the material were obtained. It is therefore clear that annealing promotes modification of the SMA microstructure. It was shown that, in general, there is an influence of the cooling/heating rate performed in the DSC on the evaluated thermal characteristics of the tested material. This influence is perhaps not so pronounced if one takes the states of the material after annealing conducted at different temperatures. With regard to the individual anneals, some of the characteristic transformation temperatures were sensitive to changes in cooling/heating rates, while in others this effect was not likely to be observed.
Keywords:
Ni-Ti SMA, Annealing, DSC cooling/heating rate, Transformation parametersReferences
AKGUL O., TUGRUL H. O., KOCKAR B. 2020. Effect of the cooling rate on the thermal and thermomechanical behavior of NiTiHf high-temperature shape memory alloy. Journal of Material Research, 35: 1572-1581.
Crossref
Google Scholar
BRAZ FERNANDES F. M., MAHESH K. K., PAULA A. S. 2013. Thermomechanical Treatments for Ni-Ti Alloys. In: Shape Memory Alloys - Processing, Characterization and Applications. Ed. Fernandes F. M. B. InTech., 3-26.
Crossref
Google Scholar
DLOUHY A., KHALIL-ALLAFI J., EGGELER G. 2003. Multiple-step martensitic transformations in Ni-rich NiTi alloys - An in-situ transmission electron microscopy investigation. Philosophical Magazine, 83(3): 339-363.
Crossref
Google Scholar
HABERLAND CH. H., KADKHODAEI M., ELAHINIA M. H. 2016. Introduction. In: Shape Memory Alloy Actuators: Design, Fabrication, and Experimental Evaluation. First Edition. Mohammad H. Elahinia. John Wiley & Sons, Ltd., 1-43.
Crossref
Google Scholar
IVANOV A. M., BELYAEV S. P., RESNINA N. N., ANDREEV V. A. 2019. Influence of the cooling/heating rate on the martensitic transformation and functional properties of the quenched Ni51Ti49 shape memory alloy. Letters on Materials, 9(4): 485-489.
Crossref
Google Scholar
KAYA I., ÖZDEMIR Y., KAYA E., KESKIN M. E. 2019. The heating-cooling rate effect on thermal properties of high nickel-rich NiTi shape memory alloy. Journal of Thermal Analysis and Calorimetry, 139: 817-822.
Crossref
Google Scholar
Memry Corporation. Inspections/Testing; https://www.memry.com/inspections-testing (access 24.06.2024) Google Scholar
NURVEREN K., AKDOĞAN A., HUANG W. M. 2008. Evolution of transformation characteristics with heating/cooling rate in NiTi shape memory alloys. Journal of Materials Processing Technology, 196: 129-134.
Crossref
Google Scholar
OSHIDA Y., TOMINAGA T. 2020. Nickel-Titanium Materials. Biomedical Applications. Berlin. Boston. De Gruyter.
Crossref
Google Scholar
SHAW J. A., CHURCHILL C. B., IADICOLA M. A. 2008. Tips and tricks for characterizing shape memory alloy wire: Part 1 - differential scanning calorimetry and basic phenomena. Experimental Techniques, 32: 55-62.
Crossref
Google Scholar
Standard Test Method for Transformation Temperature of Nickel - Titanium Alloys by Thermal Analysis, ASTM F2004-00, ASTM, 100 BarrHarbor Drive, West Conshohocken, PA, 19428. Google Scholar
TANG W., SANSTRÖM R., WEI Z. G., MIYAZAKI S. (2000). Experimental Investigation and Thermodynamic Calculation of the Ti-Ni-Cu Shape Memory Alloys. Metallurgical and Materials Transactions A, 31A: 2423-2430.
Crossref
Google Scholar
TURABI A. S., SAEDI S., SAGHAIAN S. M., KARACA H. E., ELAHINIA M. H. 2016. Experimental Characterization of Shape Memory Alloys. In: Shape Memory Alloy Actuators: Design, Fabrication, and Experimental Evaluation. First Edition. Mohammad H. Elahinia. John Wiley & Sons, Ltd., 239-277.
Crossref
Google Scholar
WANG J. 2013. Multiple Memory Material Processing for Augmentation of Local Pseudoelasticity and Corrosion Resistance of NiTi-based Shape Memory Alloys. Master thesis, 1-85. Google Scholar
WANG Z. G., ZU X. T. HUO Y. 2005. Effect of heating/cooling rate on the transformation temperatures in TiNiCu shape memory alloys. Thermochimica Acta, 436: 153–155.
Crossref
Google Scholar
WU S. K., CHANG Y. C. 2019. Thermal Cycling Effect on Transformation Temperatures of Different Transformation Sequences in TiNi-Based Shape Memory Alloys. Materials (Basel), 12(16): 2512.
Crossref
Google Scholar
University of Warmia nad Mazury in Olsztyn
