Abstract
ABSTRACTThe present work aims to understand the contribution made by each heat affected zone (HAZ) to the overall tensile behavior of the P91 steel weld joint. The three principal microstructures of heat-affected zones such as inter-critical (IC), fine grain (FG) and coarse grain (CG) were simulated through isothermal furnace heat treatments at 1138 K, 1208 K and 1473 K respectively. The simulated microstructures predominantly developed tempered martensite after oil quenching followed by tempering. The grain size and hardness across the P91steel weld joint vary in a complex manner. Tensile tests were carried out on each simulated HAZ and actual weld joint at 823K and a strain rate of 3 × 10-3 s-1. The weld joint specimen has failed in the base metal region. An increase in microhardness at the ICHAZ was found after tensile deformation. Higher initial strain/work hardening behavior of soft ICHAZ attributes the shifting of strain localization, consequently failure at the base metal.
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.
