Abstract
Thickness variation and plastic strain caused by forming process will severely affect the crash behaviors. The objective of this paper was to investigate the effect of work hardening on mechanical behavior in resistance spot welding. The microstructure and mechanical properties of as-received DP780 steel sheet (0%) and tensile stretched DP780 with 4%, 8% and 12% of pre-strain degree were scanned and analyzed as baselines, which were then jointed with press quenched 22MnB5 hot-stamping steel using resistance spot welding. The influence of work hardening on mechanical behavior, hardness profile and heating effected zone softening of welded joints were explored separately. It was concluded that the work hardening could promote load bearing capacity of spot weld joints by about 5% and induce a significant 20% drop down in energy absorption capability.
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.
