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Effect of combined grinding-burnishing process on surface integrity, tribological and corrosion performance of laser-cladded Stellite 21 alloys

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dc.contributor.authorUddin, M.
dc.contributor.authorSantifoller, R.
dc.contributor.authorHall, C.
dc.contributor.authorSchlaefer, T.
dc.date.issued2023
dc.description.abstractHerein, the influence of the grinding–burnishing on surface integrity, mechanical properties, and corrosion performance of Stellite 21 alloys coating deposited by laser cladding is investigated. The as-clad specimens are first ground followed by further modification by ball burnishing at forces of 424 N and 509 N. Results show that the grinding–burnishing enhances surface finish by lowering Ra from 2.6 to 0.73 μm and Rz from 13 to 4.9 μm, respectively. Surface porosity is found to decrease from 3.8% to 0.9%. Hardness is increased from 609 HV to 702 HV, with a surface alteration as deep as 250 μm, while wear resistance increases by reducing worn volume from 4.15 to 2.95 mm3. Because of high hardness, the grinding–burnishing increases impact resistance by lowering indent depth by 20%. Grains flatten and surface undulations are remarkably reduced due to burnishing. Finally, grinding–burnishing at 509 N improves the corrosion resistance by increasing positive corrosion potential from −0.41 to −0.14 V and lowering corrosion current density from 6.34 × 10−4 A cm−2 to 2.19 × 10−5 A cm−2, as compared to grinding. This synergistic grinding–burnishing can be a plausible post-treatment route for the laser-clad alloys.
dc.identifier.citationAdvanced Engineering Materials, 2023; 25(8, article 2201332):1-12
dc.identifier.doi10.1002/adem.202201332
dc.identifier.issn1438-1656
dc.identifier.issn1527-2648
dc.identifier.urihttps://hdl.handle.net/11541.2/32137
dc.language.isoen
dc.publisherWiley VCH Verlag GmbH
dc.rightsCopyright 2022 The Authors. Advanced Engineering Materials published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited Access Condition Notes: Accepted manuscript available on open access
dc.source.urihttps://doi.org/10.1002/adem.202201332
dc.subjectlaser cladding
dc.subjectStellite 21 alloy
dc.subjectgrinding
dc.subjectball burnishing
dc.subjectsurface integrity
dc.subjectcorrosion resistance
dc.titleEffect of combined grinding-burnishing process on surface integrity, tribological and corrosion performance of laser-cladded Stellite 21 alloys
dc.typeJournal article
pubs.publication-statusPublished
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ror.fileinfo12269969010001831 13269969000001831 Adv Eng Mater - 2022 - Uddin - Effect of Combined Grinding Burnishing Process on Surface Integrity Tribological and
ror.mmsid9916708820301831

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