Abstract
Abstract Stretch formability of steel sheets can be evaluated by the strain hardening exponent. Cold rolled High Strength Low Alloy (HSLA) and Interstitial Free (IF) steels having different compositions and processing histories have been studied. Steels were subjected to controlled strains and the values of strain hardening exponents, microstrains and residual stresses were measured. It was found that a linear correlation exists between residual stresses and the strain hardening exponents. A possible mechanism for work hardening in the presence of misoriented grains is proposed taking in account the smrage of elastic strain energy and the dislocation movements. A strain interval (10.15%) is proposed for stretch forming operations to minimize residual stresses.
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.
