Effect of heat treatment on mechanical properties and structure of high-strength pipe steels with a ferrite-bainite structure

• Published in: Metallurgist (New York) Vol. 55; no. 7-8; pp. 489 - 495
• Main Authors: Matrosov, M. Yu, Talanov, O. P., Lyasotskii, I. V., Dyakonov, D. L., Khlusova, E. I., Orlov, V. V., Korchagin, A. M., Tsvetkov, D. S., Popova, S. D.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-10-2011; Springer; Springer Nature B.V
• Subjects: Alloys; Carbonitrides; Characterization and Evaluation of Materials; Chemistry and Materials Science; Heat treatment; High strength low alloy steels; Innovations; Iron compounds; Materials Science; Mechanical properties; Metallic Materials; Pipe; Precipitation; Rain and rainfall; Structural steels; Technology application; Thermomechanical treatment; Toy industry; carbonitride precipitation; pipe steels; heat treatment; ferrite-bainite microstructure; TEM method
• ISSN: 0026-0894; 1573-8892
• DOI: 10.1007/s11015-011-9457-8

The effect of heat treatment on mechanical properties and microstructure of high-strength low-alloy ferrite-bainite pipe steels is studied. Specimens are heated in a laboratory furnace up to a temperature in the range 100–850°C. Dependences for the change in mechanical properties on heating temperature and the main features of steel structure are determined. TEM is used to study excess phase precipitation, including Nb and V carbonitrides, during heating. Unfavorable temperature ranges are determined for heating pipe steels with a ferrite-bainite structure. The results obtained may be used in industrial production and during development of new technology for thermomechanical treatment.