Influence of Molybdenum and Heat Treatment on the Structure, Physicomechanical Properties, and Corrosion Resistance of a Composite Material Based on Ferritic Powder Steel

• Published in: Russian metallurgy Metally Vol. 2023; no. 4; pp. 446 - 452
• Main Authors: Ivannikov, A. Yu, Klychevskikh, Yu. A., Grebennikov, I. K., Sergienko, K. V., Puchkov, Yu. A., Lysenkov, A. S., Bazaleeva, K. O., Kolmakov, A. G.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-04-2023; Springer Nature B.V
• Subjects: Advanced Materials and Technologies; Chemistry and Materials Science; Chromium; Composite materials; Compressive strength; Corrosion resistance; Ferritic stainless steels; Ferrous alloys; Heat treatment; High alloy steels; Hot pressing; Iron; Materials Science; Metallic Materials; Molybdenum; Phase composition; ferritic steel; physicomechanical properties; hot pressing; porosity; agglomerate; intermetallic phases; composite materials; molybdenum
• ISSN: 0036-0295; 1555-6255; 1531-8648
• DOI: 10.1134/S0036029523040109

—The structure, the phase composition, the physicomechanical properties, and the corrosion resistance of a precipitation-hardened composite material fabricated by hot pressing (1050°C, 30 MPa, 30 min) of powders of high-alloy ferritic steel (Fe base alloy, 30% Cr, 0.2% C) and molybdenum in an amount of 1, 5, and 10% are studied. The maximum compressive strength (1815 ± 3 MPa) is characteristic of the composite material with 10% Mo. After quenching from 1050°C, the composite material (Fe–Cr–Mo) has no χ phase, its strength decreases to 1656 ± 21 MPa, and the residual deformation (shortening) increases by 2.5–3 times.