Abstract
Improvement in pitting corrosion resistance of the friction-surfaced (FSed) 17-4PH stainless steel coatings was mainly attributed to fragmentation of sulfide inclusions during friction surfacing (FS). Formation of vermicular δ-ferrite and grain refinement of martensitic matrix around the δ-ferrite affected the distribution of pits. FS parameters had a negligible effect on the pitting corrosion resistance of the FSed 17-4PH coatings. However, the decrease in pitting corrosion resistance of the FSed coatings after aging (H900) was due to the higher dislocation density for facilitating the metastable pit initiation and promoting the transition of metastable pits to the stable ones.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
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.