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Creep, Strength, and Fracture Toughness of Niobium-Based Intermetallic-Hardened Laminated Composites

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Abstract

The structure, the strength at high temperatures, and the fracture toughness of the composites fabricated under various conditions of diffusion welding of stacks of Nb foils with coatings made of a mixture of Nb, Ti, Mo, Si, ZrH2, Cr, and Al powders are studied. The strength in the temperature range of 1100–1300°C changes from 490 to 350 MPa, the fracture toughness at room temperature is 15.6 MPa m1/2, and the creep resistance determined in 100-h tests at a residual strain tolerance of 1% at 1150°C is 90 MPa.

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Funding

This work was carried out within the framework 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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Authors and Affiliations

  1. Institute of Solid State Physics, Russian Academy of Sciences, 142432, Chernogolovka, Moscow oblast, Russia

    D. V. Prokhorov, V. P. Korzhov, V. M. Kiiko & I. S. Zheltyakova

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  1. D. V. Prokhorov
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  2. V. P. Korzhov
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  3. V. M. Kiiko
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  4. I. S. Zheltyakova
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Correspondence to D. V. Prokhorov.

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Translated by K. Shakhlevich

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Prokhorov, D.V., Korzhov, V.P., Kiiko, V.M. et al. Creep, Strength, and Fracture Toughness of Niobium-Based Intermetallic-Hardened Laminated Composites. Russ. Metall. 2021, 1250–1254 (2021). https://doi.org/10.1134/S003602952110027X

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  • DOI: https://doi.org/10.1134/S003602952110027X

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