PSI - Issue 69

Roman Karelin et al. / Procedia Structural Integrity 69 (2025) 35–40

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Thus, the analysis of the structure and phase composition of the obtained NiTi seamless tubes, as well as the characteristic temperatures of the forward and reverse martensitic transformations after screw rolling showed that screw rolling at high temperatures is not accompanied by a significant change in the structural state and characteristic temperatures of martensitic transformations, which indicates the correct choice of the rolling process route from the point of view of preserving the properties of the alloy and the possibility of subsequent additional processing. 4. Summary In the present study a new technological scheme for the production of NiTi SMA seamless tubes is developed. The process of shell production by electrical discharge method and subsequent plugging on a crew-rolling mill are described. With the application of developed technological scheme NiTi seamless tubes with various outer diameters from 40 to 27.5 mm and a tube schedule from 10 mm to 4 mm were produced. The analysis of mechanical and functional properties of obtained tubes reveals that they are quite stable and comparable with properties of initial SMA rods. The suggested technological scheme of NiTi seamless tubes production is promising in terms of simplified processing and potential cost reduction. Acknowledgements The reported study was funded by the Russian Science Foundation (project no.23-19-00729, https://rscf.ru/project/23-19-00729/). References [1] Strittmatter, J., Gümpel, P., Hiefer, M. 2019. Intelligent materials in modern production–Current trends for thermal shape memory alloys. Procedia Manufacturing, 30, 347–356. [2] Mehta, K., Gupta, K., 2019. Fabrication and Processing of Shape Memory Alloys, Manufacturing and Surface Engineering. Cham: Springer International Publishing, pp. 90. [3] Sadashiva, M., Sheikh, M. Y., Khan, N., Kurbet, R., Gowda, T. D., 2021. A review on application of shape memory alloys. IJRTE, 9 (6), 111 120. [4] Chaudhari, R., Vora, J. J., Parikh, D. M., 2021. A review on applications of nitinol shape memory alloy. Recent Advances in Mechanical Infrastructure: Proceedings of ICRAM 2020, 123-132. [5] Zareie, S., Issa, A. S., Seethaler, R. J., Zabihollah, A., 2020. Recent advances in the applications of shape memory alloys in civil infrastructures: A review. In Structures, Elsevier, 27, 1535–1550. [6] Hayrettin, C., Karakoc, O., Karaman, I., Mabe, J. H., Santamarta, R., Pons, J., 2019. Two way shape memory effect in NiTiHf high temperature shape memory alloy tubes. Acta Materialia, 163, 1-13. [7] Komarov, V., Karelin, R., Khmelevskaya, I., Yusupov, V., Gunderov, D., 2022. Effect of post-deformation annealing on structure and properties of nickel-enriched Ti-Ni shape memory alloy deformed in various initially deformation-induced structure states. Crystals 12(4), 506. [8] Khmelevskaya, I. Y., Karelin, R. D., Prokoshkin, S. D., Isaenkova, M. G., Perlovich, Y. A., Fesenko, V. A., Zaripova, M. M., 2019, March). Features of nanostructure and functional properties formation in Ti-Ni shape memory alloys subjected to quasi-continuous equal channel angular pressing. In IOP Conference Series: Materials Science and Engineering 503(1), 012024. [9] Karelin, R., Komarov, V., Khmelevskaya, I., Andreev, V., Yusupov, V., Prokoshkin, S., 2023. Structure and properties of TiNi shape memory alloy after low-temperature ECAP in shells. Materials Science and Engineering: A, 872, 144960. 10.1016/j.msea.2023.144960 [10] Komarov, V., Karelin, R., Cherkasov, V., Yusupov, V., Korpala, G., Kawalla, R.& Prokoshkin, S. (2023). Effect of Severe Torsion Deformation on Structure and Properties of Titanium–Nickel Shape Memory Alloy. Metals, 13(6), 1099. 10.3390/met13061099 [11] Frotscher, M., Schreiber, F., Neelakantan, L., Gries, T., Eggeler, G., 2011. Processing and characterization of braided NiTi microstents for medical applications. Materialwissenschaft und Werkstofftechnik 42(11), 1002–1012. [12]Yoshida, K., Watanabe, M., Ishikawa, H., 2001. Drawing of Ni–Ti shape-memory-alloy fine tubes used in medical tests. Journal of materials processing technology 118(1-3), 251–255]. [13] Chen, W., Wang, H., Zhang, L., Tang, X., 2009. Development of hot drawing process for nitinol tube. International Journal of Modern Physics B 23(06n07), 1968-1974. [14] Gorgul, S. I., Medvedev, M. I., Bespalova, N. A., Sobko-Nesteruk, O. E., Tretyak, N. G., Chaika, N. V., 2013. Manufacturing technology for titanium tubes from billets prepared by electron-beam remelting. Metallurgist 57(7), 748-751. [15]Adler P., Frei, R., Kimiecik, M., Briant, P., James, B., Liu, C., 2018. Effects of tube processing on the fatigue life of nitinol. Shape Memory and Superelasticity 4, 197–217. [16] Kaya, E., Kaya, İ., 2019. A review on machining of NiTi shape memory alloys: The process and post process perspective. The International Journal of Advanced Manufacturing Technology 100(5), 2045–2087.