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Surface characterization and wear behaviour of laser surface melted AISI 316L stainless steel

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dc.contributor.author Kumar, A
dc.contributor.author Pityana, Sisa L
dc.contributor.author Dutta Majumdar, J
dc.date.accessioned 2012-04-11T09:04:28Z
dc.date.available 2012-04-11T09:04:28Z
dc.date.issued 2010
dc.identifier.citation Kumar, A, Pityana, S and Dutta Majumdar, J. 2010. Surface characterization and wear behaviour of laser surface melted AISI 316L stainless steel. Lasers in Engineering en_US
dc.identifier.issn 0898-1507
dc.identifier.issn 1029-029X
dc.identifier.uri http://hdl.handle.net/10204/5729
dc.identifier.uri https://www.oldcitypublishing.com/journals/lie-home/lie-issue-contents/lie-volume-24-number-3-4-2012/lie-24-3-4-p-147-166/
dc.identifier.uri http://www.oldcitypublishing.com/pdf/3115
dc.description Copyright: 2010 Old City Publishing. This is an ABSTRACT ONLY. en_US
dc.description.abstract The present study concerns an in depth investigation of the influence of laser surface melting of AISI 316L stainless steel using Ar and N2 as shrouding atmosphere. Laser surface melting has been carried out using a 5 kW continuous wave (CW) fibre optics delivery Nd:YAG laser with a beam diameter of 4 mm. Microstructure of the surface melted layer consists of grain refined austenite when melted in Ar shroud and iron nitrides (Fe4N) and chromium nitrides (Cr2N) dispersed in -Fe matrix when melted in N2 shroud. Lattice strain and residual stress are also reduced by laser surface melting. The average microhardness of the melt zone increases from 240 VHN (for as-received AISI 316L stainless steel) to 375 VHN and 475 VHN for laser surface melted AISI 316L stainless steel in Ar and N2 atmosphere, respectively. Fretting wear behaviour against hardened steel ball shows a significant improvement in fretting wear resistance due to laser surface melting with a maximum improvement achieved in N2 shroud. en_US
dc.language.iso en en_US
dc.publisher Old City Publishing Inc. en_US
dc.relation.ispartofseries Workflow;8270
dc.subject AISI 316L stainless steel en_US
dc.subject Nd:YAG laser en_US
dc.subject Laser surface melting en_US
dc.subject Microstructure en_US
dc.title Surface characterization and wear behaviour of laser surface melted AISI 316L stainless steel en_US
dc.type Article en_US
dc.identifier.apacitation Kumar, A., Pityana, S. L., & Dutta Majumdar, J. (2010). Surface characterization and wear behaviour of laser surface melted AISI 316L stainless steel. http://hdl.handle.net/10204/5729 en_ZA
dc.identifier.chicagocitation Kumar, A, Sisa L Pityana, and J Dutta Majumdar "Surface characterization and wear behaviour of laser surface melted AISI 316L stainless steel." (2010) http://hdl.handle.net/10204/5729 en_ZA
dc.identifier.vancouvercitation Kumar A, Pityana SL, Dutta Majumdar J. Surface characterization and wear behaviour of laser surface melted AISI 316L stainless steel. 2010; http://hdl.handle.net/10204/5729. en_ZA
dc.identifier.ris TY - Article AU - Kumar, A AU - Pityana, Sisa L AU - Dutta Majumdar, J AB - The present study concerns an in depth investigation of the influence of laser surface melting of AISI 316L stainless steel using Ar and N2 as shrouding atmosphere. Laser surface melting has been carried out using a 5 kW continuous wave (CW) fibre optics delivery Nd:YAG laser with a beam diameter of 4 mm. Microstructure of the surface melted layer consists of grain refined austenite when melted in Ar shroud and iron nitrides (Fe4N) and chromium nitrides (Cr2N) dispersed in -Fe matrix when melted in N2 shroud. Lattice strain and residual stress are also reduced by laser surface melting. The average microhardness of the melt zone increases from 240 VHN (for as-received AISI 316L stainless steel) to 375 VHN and 475 VHN for laser surface melted AISI 316L stainless steel in Ar and N2 atmosphere, respectively. Fretting wear behaviour against hardened steel ball shows a significant improvement in fretting wear resistance due to laser surface melting with a maximum improvement achieved in N2 shroud. DA - 2010 DB - ResearchSpace DP - CSIR KW - AISI 316L stainless steel KW - Nd:YAG laser KW - Laser surface melting KW - Microstructure LK - https://researchspace.csir.co.za PY - 2010 SM - 0898-1507 SM - 1029-029X T1 - Surface characterization and wear behaviour of laser surface melted AISI 316L stainless steel TI - Surface characterization and wear behaviour of laser surface melted AISI 316L stainless steel UR - http://hdl.handle.net/10204/5729 ER - en_ZA


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