Research on the development of EP-450 high-density, Y2O3-oxide dispersion-hardened, reactor ferritemartensite steel is described. All available parameters influencing the final density of the compacts were varied in the course of the preparation of the powders and electric-pulse consolidation. The research established that samples with density equal to 99% of the theoretical value can be obtained for the following optimized mechanical activation and electric-pulse consolidation parameters: mechanical alloying time 30 h, optimal Y2O3 amount 0.2–0.5 wt.%, sintering temperature 825–890°C, climb rate to the prescribed temperature >300°C/min, load 70–80 MPa, holding time at the load – without isothermal holding or holding for ≥3 min.
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Translated from Atomnaya Énergiya, Vol. 120, No. 1, pp. 29–34, January, 2016.
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Bogachev, I.A., Chernov, I.I., Stal’tsov, M.S. et al. Optimization of Electric-Pulse Consolidation Regimes to Obtain High-Density Dispersion-Hardened Reactor Steel. At Energy 120, 37–43 (2016). https://doi.org/10.1007/s10512-016-0092-0
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DOI: https://doi.org/10.1007/s10512-016-0092-0