960 MPa grade high performance weldable structural steel plate processed by using TMCP
To develop high strength, good toughness, and weldable steel plate, a steel composition was designed. It was an ultra-low-carbon microalloyed steel. TMCP (thermal mechanical control process) and RPC (relaxation precipitation control) were employed to ensure fine lath bainite microstructure. This kind of microstructure could induce higher strength and better toughness.
Key wordslow-carbon bainitic steel acicular ferrite substructure relaxation precipitation control
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- David Porter, Anssi Laukkanen, Pekka Nevasmaa, et al. Performance of TMCP Steel With Respect to Mechanical Properties After Cold Forming and Post-Forming Heat Treatment [J]. International Journal of Pressure Vessels and Piping, 2004, 81 (10/11): 867.Google Scholar
- Kinsman K R, Aaronson H I. Transformation and Hardenability in Steels [M]. Michigan: Climax Molybdenum Co, 1977.Google Scholar
- Maki T, Talor K A, Thompson S W, et al. Physical Metallurgy of Direct-Quenched Steels [M]. Warrendale: TMS, 1993.Google Scholar
- NIE Wen-jin, YANG Shan-wu, YUAN Shao-qiang, et al. Dissolving of Nb and Ti Carbonitride Precipitates in Microalloyed Steels [J]. Journal of University of Science and Technology Beijing, 2003, 10(5): 78.Google Scholar