Structure and mechanical properties of the porous TiNi alloys obtained by SHS method
In this paper, the porous TiNi alloys produced by self-propagating high-temperature synthesis at reaction onset temperatures ranging from 395°C to 515°C were studied. Porosity, average pore size, and wall thickness were determined using optical coherence tomography. The porosity decreased from 63% to 58-59%; the pore size reached a minimum of 5.9 pm at 495°C and increased to 27.1 pm at 515°C. Wall thickness varied from 78.1 pm at 395°C to a minimum value of 28.4 pm at 495°C. The compressive mechanical response of the alloys was governed by the structural parameters of the porous framework. With decreasing porosity and average pore size, the elastic modulus increased from 1200-1300 MPa to 2400 MPa, the ultimate strength from ~65 MPa to 128 MPa, and the strain to failure from ~7% to ~14%. The most favorable combination of high strength and ductility was achieved at a temperature of435°C. The dependence of the ultimate strength aB on porosity was approximated by the Gibson-Ashby model with n = 3.2 (R2 = 0.98).
Keywords
titanium nickelide,
porous alloys,
SHS method,
porosity,
pore size,
mechanical properties,
Gibson-Ashby model,
optical coherence tomography (OCT),
phase compositionAuthors
| Garin Aleksandr S. | Tomsk State University | stik-020@mail.ru |
| Kozulin Aleхander A. | Tomsk State University | kozulyn@ftf.tsu.ru |
| Baygonakova Gul’sharat A. | Tomsk State University | gat27@mail.ru |
| Marchenko Ekaterina S. | Tomsk State University; Institute of Problems of Chemical and Energy Technologies of the Siberian Branch of the Russian Academy of Sciences | 89138641814@mail.ru |
Всего: 4
References
Zhang Y., Attarilar S., Wang L., Lu W., Yang J., Fu Y. A Review on Design and Mechanical Properties of Additively Manufactured NiTi Implants for Orthopedic Applications // International Journal of Bioprinting. 2021. V. 7 (2). Art. 340. doi: 10.18063/ijb.v7i2.340.
Safavi S., Yu Y., Robinson D.L., Gray H.A., Ackland D.C., Lee P.V.S. Additively manufactured controlled porous orthopedic joint replacement designs to reduce bone stress shielding: a systematic review // Journal of Orthopaedic Surgery and Research. 2023. V. 18. Art. 42. doi: 10.1186/s13018-022-03492-9.
Aihara H., Zider J., Fanton G., Duerig T.Combustion synthesis porous nitinol for biomedical applications // International Journal of Biomaterials. 2019. V. 2019 (1). Art. 4307461. doi: 10.1155/2019/4307461.
Saadati A., Aghajani H. Fabrication of porous NiTi biomedical alloy by SHS method // Journal of Materials Science: Materials in Medicine. 2016. V. 30 (8). P. 92. doi: 10.1007/s10856-019-6296-9.
He Z., Wang Z., Wang D., Liu X. Microstructure and Mechanical Properties of Porous NiTi Alloy Prepared by Integration of Gel-Casting and Microwave Sintering // Materials. 2022. V. 15 (22). Art. 7331. doi: 10.3390/ma15207331.
Maashaa D., Purevdagva E., Rubanik V.V., Rubanik V.V. Jr. The Influence of Ultrasonic Acti vation on Microstructure, Phase Transformation and Mechanical Properties of Porous Ni-Ti Shape Memory Alloys via Self-Propagating High-Temperature Synthesis // Materials. 2023. V. 16 (18). Art. 6134. doi: 10.3390/ma16186134.
Jian Y.T., Yang Y., Tian T., Stanford C., Zhang X.P., Zhao K. Effect of pore size and porosity on the biomechanical properties and cytocompatibility of porous NiTi alloys // PLoS One. 2015. V. 10 (6). Art. e0128138. doi: 10.1371/journal.pone.0128138.
Gong X.W., Zhang Y., Shi Q., Zhang L.X. Analysis of porous NiTi shape memory alloy fabri cated by MIM and SHS // Optoelectronics and Advanced Materials Rapid Communications. 2016. V. 10 (1-2). P. 68-73.
Morgan E.F., Unnikrisnan G.U., Hussein A.I. Bone mechanical properties in healthy and diseased states // Annual Review of Biomedical Engineering. 2018. V. 20 (1). P. 119-143. doi: n46/annurev-bioeng-062n7-121139.
Bansiddhi A., Sargeant T.D., Stupp S.I., Dunand D.C. Porous NiTi for bone implants: a review // Acta Biomaterialia. 2008. V. 4 (4). P. 773-782. doi: 10.1016/j.actbio.2008.02.009.
Ashby M.F., Gibson L.J. Cellular solids: structure and properties. Press Syndicate of the University of Cambridge, 1997. xviii, 510 p.
Huang Y., Xin D., Chen X. Microstructure and properties of NiTi shape memory alloy fabricated by double-wire plasma arc additive manufacturing with a nearly equal atomic ratio // Materials Letters. 2024. V. 354. Art. 135406. doi: j.matlet.2023.135406.
