Structure and mechanical properties of a multilayer carbide-hardened niobium composite material fabricated by diffusion welding
- Authors: Korzhov V.P.1, Ershov A.E.1, Stroganova T.S.1, Prokhorov D.V.1
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Affiliations:
- Institute of Solid State Physics
- Issue: Vol 2016, No 4 (2016)
- Pages: 313-320
- Section: Promising Materials and Technologies
- URL: https://journals.rcsi.science/0036-0295/article/view/170449
- DOI: https://doi.org/10.1134/S0036029516040133
- ID: 170449
Cite item
Abstract
The structure, the bending strength, and the fracture mechanism of an artificial niobium-based composite material, which is fabricated by high-pressure diffusion welding of multilayer stacks assembled from niobium foils with a two-sided carbon coating, are studied. The microstructure of the composite material is found to consist of alternating relatively plastic layers of the solid solution of carbon in niobium and hardening niobium carbide layers. The room-temperature proportional limit of the developed composite material is threefold that of the composite material fabricated from coating-free niobium foils using the proposed technology. The proportional limit of the developed composite material and the stress corresponding to the maximum load at 1100°C are 500 and 560 MPa, respectively. The developed material is considered as an alternative to Ni–Al superalloys.
About the authors
V. P. Korzhov
Institute of Solid State Physics
Author for correspondence.
Email: korzhov@issp.ac.ru
Russian Federation, Chernogolovka, Moscow oblast, 142432
A. E. Ershov
Institute of Solid State Physics
Email: korzhov@issp.ac.ru
Russian Federation, Chernogolovka, Moscow oblast, 142432
T. S. Stroganova
Institute of Solid State Physics
Email: korzhov@issp.ac.ru
Russian Federation, Chernogolovka, Moscow oblast, 142432
D. V. Prokhorov
Institute of Solid State Physics
Email: korzhov@issp.ac.ru
Russian Federation, Chernogolovka, Moscow oblast, 142432