Growth of hardening nitride phase particles in a Ni-Co-Cr-Ti alloy during annealing

Y.R. Kolobov, B.S. Bokshtein, M.G. Tokmachev ORCID logo , A.O. Rodin, S.S. Manokhin, A.Y. Tokmacheva-Kolobova, S.V. Ovsepyan show affiliations and emails
Received 27 December 2023; Accepted 27 February 2024;
Citation: Y.R. Kolobov, B.S. Bokshtein, M.G. Tokmachev, A.O. Rodin, S.S. Manokhin, A.Y. Tokmacheva-Kolobova, S.V. Ovsepyan. Growth of hardening nitride phase particles in a Ni-Co-Cr-Ti alloy during annealing. Lett. Mater., 2024, 14(1) 62-65
BibTex   https://doi.org/10.48612/letters/2024-1-62-65

Abstract

Figure shows experimental data on particle growth during isothermal annealing at 1300 °C as a time dependence of the average particle volume. For particles located at different distances from the sample surface, these dependences are approximated by straight lines with close angular coefficients (curves 1 and 2).The microstructure and phase composition of a nickel-based heat-resistant alloy samples doped with Cr, Co, Ti, W and Mo (alloy VZh171) in the nitrided state were studied using methods of autoemission high-resolution scanning electron microscopy. The change in the particle sizes of titanium nitrides during isothermal annealing at a temperature of 1300°C for 1.5, 2 and 3 hours was studied. It is shown that the evolution of particle sizes under the studied conditions corresponds to the Lifshitz-Slezov-Wagner model of diffusive coalescence of particles.

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Funding

1. Russian Scientific Foundation - 22-13-00324
2. State Assignment - FFSG-2024-0016, state registration No. 124020500064-2