Abstract
Composites with a layered structure are fabricated by a solid-phase technology using diffusion welding of stacks made of molybdenum foils with single- and double-sided (Si–C) coatings at a pressure of 10–14 MPa and a temperature of 1500°C. The structure of the composites is studied. The strength of the composites is 300 MPa at 1450°C, and the fracture toughness is 21 MPa m1/2 at room temperature.
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REFERENCES
I. L. Svetlov, “High-temperature Nb–Si composites,” Materialoved., No. 9, 29–38; No. 10, 18–27 (2010).
M. I. Karpov, V. I. Vnukov, T. S. Stroganova, D. V. Prokhorov, I. S. Zheltyakova, B. A. Gnesin, V. M. Kiiko, and I. L. Svetlov, “Influence of the silicon content on the microstructure and mechanical properties of an alloy based on the niobium–silicon system,” Izv. Ross. Akad. Nauk, Ser. Fiz. 83 (10), 1353–1361 (2019).
P. Jain and K. S. Kumaru, “Tensile creep of Mo–Si–B alloys,” Acta Mater. 58 (6), 2124–2142 (2010).
R. Li, B. Li, T. Wang, S. Ren, X. Chen, J. Wang, and G. Zhang, “Improved fracture toughness of a Mo–12Si–8.5B–3Zr alloy by grain coarsening and its multiple toughening mechanisms,” J. Alloys Compd. 743, 716–727 (2018).
R. Li, B. Li, X. Chen, J. Wang, T. Wang, Y. Gong, S. Ren, and G. Zhang, “Variation of phase composition of Mo–Si–B alloys induced by boron and their mechanical properties and oxidation resistance,” Mater. Sci. Eng., A 749, 196–209 (2019).
J. H. Schneibel, M. J. Kramer, and D. S. Easton, “A Mo–Si–B intermetallic alloy with a continuous α‑Mo matrix,” Scr. Mater. 46, 217–221 (2002).
T. Moriyama, K. Yoshimi, M. Zhao, T. Masnou, T. Yokoyama, J. Nakamura, H. Katsui, and T. Goto, “Room-temperature fracture toughness of MoSiBTiC alloys,” Intermetallics 84, 92–102 (2007).
V. M. Kiiko and V. P. Korzhov, “Structure and fracture characteristics of layered Ni–Al composites,” Poverkhnost, No. 11, 42–51 (2017).
V. M. Kiiko and V. P. Korzhov, “Preparation, structure, and mechanical characteristics of Mo–Si–B layered composite material,” Poverkhnost, No. 5, 62–69 (2019).
V. Kiiko, D. Prokhorov, T. Stroganova, I. Zheltyakova, A. Ershov, and V. Korzhov, “Investigation of heat resistance and structure of layered refractory composites reinforced by chemical compounds with silicon, carbon, and boron,” Machines. Technologies. Materials, No. 8, 421–424 (2017).
V. I. Feodos’ev, Strength of Materials (Nauka, Moscow, 1979).
D. Broek, Fundamentals of Fracture Mechanics (Vysshaya Shkola, Moscow, 1980).
V. M. Kiiko and V. P. Korzhov, “Characteristic features of the layered composites based on niobium and molybdenum,” Vestn. Tambov Univ., Ser. Estestv. Tekhn. Nauki 23 (122), 129–133 (2018).
V. P. Korzhov, V. M. Kiiko, and I. S. Zheltyakova, “Structure and mechanical properties of the layered composites made of multicomponent niobium alloys and strengthening compounds of silicon and carbon fabricated by solid-phase sintering,” Deform. Razrushenie Mater., No. 5, 19–26 (2019).
Funding
This work was carried out in terms of state assignment no. 0028-2019-0020 and was supported by the Russian Foundation for Basic Research (project no. 20-03-00296).
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Translated by K. Shakhlevich
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Zheltyakova, I.S., Korzhov, V.P., Kiiko, V.M. et al. Strength and Fracture Toughness of Layered Mo–Si–C Composites. Russ. Metall. 2021, 1245–1249 (2021). https://doi.org/10.1134/S0036029521100372
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DOI: https://doi.org/10.1134/S0036029521100372