Abstract
The development of graded microstructure in Ni-base Alloy 602CA, processed through the new technique of high reduction (per pass) cold rolling (HRCR) and the severe surface plastic deformation technique of ultrasonic nanocrystal surface modification (UNSM) was investigated. Clear through-thickness gradients in residual stress, dislocation structure and boundary density with misorientation >2° were observed after the HRCR and UNSM. However, the gradient in HRCR did depend on the roll-pass schedule: relative reduction per pass, total reduction and direction of the roll pass. Applying maximum reduction per pass and minimum number of passes exhibited an improved graded microstructure for 40% total reduction in both unidirectional (UR) and cross rolling (CR) cases. The UR40 and CR40 in HRCR process led to graded microstructures that compared well with those produced by UNSM.
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.
