Effect of high-temperature thermomechanical treatment in the austenite region on microstructure and mechanical properties of low-activated 12% chromium ferritic-martensitic steel EK-181 |
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| Authors: | N A Polekhina I Yu Litovchenko A N Tyumentsev D A Kravchenko V M Chernov M V Leont’eva-Smirnova |
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| Institution: | 1.Institute of Strength Physics and Materials Science, Siberian Branch,Russian Academy of Sciences,Tomsk,Russia;2.National Research Tomsk State University,Tomsk,Russia;3.Bochvar High-Technology Research Institute of Inorganic Materials,Moscow,Russia |
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| Abstract: | The effect of high-temperature thermomechanical treatment with deformation in the austenite region on the microstructure and mechanical properties in low-activated 12% chromium ferritic-martensitic steel EK-181 (Fe–12Cr–2W–V–Ta–B) has been investigated. This treatment leads to a significant increase (compared to traditional regime of treatment) in the density of dislocations, dispersity, and volume fraction of nanosized particles V(C,N) and, as a consequence, to an increase in the yield strength while maintaining a sufficient reserve of ductility. |
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