Abstract
An ultra-high strength steel sheet with a tensile strength over 1500MPa and excellent low-temperature impact toughness was obtained by either using controlled rolling plus air cooling (CR+AC) or laboratorial thermo-mechanical controlled processing (TMCP). The effects of CR+AC and the TMCP processes were then examined on the microstructures and mechanical properties of this steel sheet. The results showed that by using CR+AC technology a uniformly distributed bainitic ferrite microstructure could be produced in this steel sheet under the appropriate reheating and rolling condition. By using TMCP technology, a lath bainite and martensitic microstructure with superior mechanical properties could also be generated. A microstructural analysis was made to interprete the strengthening-toughening mechanisms in association with the processes.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
