Effect of the Initial Powder and Treatment on the Structure of Oxide Dispersion-Strengthened Steel

• Published in: Atomic energy (New York, N.Y.) Vol. 116; no. 1; pp. 42 - 47
• Main Authors: Chernov, I. I., Stal’tsov, M. S., Kalin, B. A., Bogachev, I. A., Burlakova, M. A., Sokolova, N. A., Krikun, E. V., Shuvalov, D. B., Skrytnyi, V. I., Olevskii, E. A., Ageev, V. S.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.05.2014; Springer; Springer Nature B.V
• Subjects: Atomic structure; Dispersion hardening steels; Electric currents; Grain size; Hadrons; Heavy Ions; Iron compounds; Load; Mechanical alloying; Morphology; Nuclear Chemistry; Nuclear Energy; Nuclear Physics; Nuclear reactors; Oxides; Physics; Physics and Astronomy; Plasma sintering; Powders; Reactors; Structural steels; Studies; Variability; Yttrium oxide; Spherical Powder; Mechanical Alloy; Matrix Steel; Steel Powder; Milling
• ISSN: 1063-4258; 1573-8205
• DOI: 10.1007/s10512-014-9814-3

The results of investigations of the structure and uniformity of the Y 2 O 3 distribution in reactor EP-450 (12Kh13M2BFR) dispersion-strengthened ferrite-martensite steel are presented. It is found that electricpulse plasma sintering of powders of matrix steel and dispersion-strengthening oxides can be one of the methods for fabricating reactor steel. Optical and transmission electron microscopy investigations show that quite uniform grains are formed in a compact and no appreciable porosity is seen visually. Steel with structure in the form of flakes with mechanical alloying time 15 h possesses the best chemical composition with quite uniform Y 2 O 3 distribution.