Abstract
The improvement of mechanical strength and corrosion in duplex stainless steels can be maximized when the fractions between phases (α) and (γ) are balanced. Machining operations may compromise surface integrity through microstructural deformations. In this study, surface milling of a 2205 duplex steel was performed under Vc conditions between 298 and 651 m/min and fz between 0.04 and 0.18 mm/tooth. The microstructural evolution characteristics, mechanical properties and residual stresses were investigated by optical microscopy, SEM, MFM, XRD and Vickers microhardness. After milling, microstructure was found to be deformed by shearing of the cutting tool, and the volume fraction of austenite and ferrite was altered, as determined by Rietveld refinements because of the transformation of austenite into martensite (α') induced by plastic deformation. The samples also exhibited variations in phase-specific microhardness, associated with strain-induced martensite formation and the presence of tensile residual stresses.
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 callMore From: The International Journal of Advanced Manufacturing Technology
Disclaimer: 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.
