Abstract
This work has investigated the effect of thermo-mechanical cycling on the microstructure and strength of lath martensite in the weld Coarse Grained Heat Affected Zone (CGHAZ). The weld CGHAZ was simulated by Gleeble simulator according to the thermal cycle calculated by Rosenthal equation. The results show clearly that deformation promotes the dislocation density during cooling and thus decreases the width of lath martensite in the weld CGHAZ. In addition, the fraction of particle increased in the deformed weld HAZ and this is because the precipitation kinetics is accelerated by deformation. Meanwhile, lath martensite strength in deformed CGHAZ was a higher than undeformed CGHAZ, which is due to the contribution of grain boundary strengthening and precipitation strengthening.
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.
