Abstract
Abstract We examined the effects of retained austenite phase on the springback of cold-rolled transformation-induced plasticity (TRIP) steel sheets through a series of V-bending tests. Prior to testing, the intercritically annealed TRIP steel sheets were heat-treated at different austempering temperatures (300, 350 and 400 °C) to obtain three specimens with different retained austenite phase fractions. Results show that the amount of springback in TRIP steel decreased as the fraction of retained austenite phase increased. The amount of springback was reduced by about 30% when the fraction of retained austenite phase increased by 5%. When the area fractions of the retained austenite phase of TRIP steel were less than 3%, we observed micro-cracks in the near-surface points of a V-shaped specimen where compressive and tensile stresses were concentrated. The dependency of material's direction upon springback was very weak in the V-bending test where no constraint such as a blank holder exists during testing.
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.
