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Show simple item record Popoola, API Fatoba, OS Popoola, M Pityana, Sisa L 2017-02-23T10:00:50Z 2017-02-23T10:00:50Z 2016-10
dc.identifier.citation Popoola, A.P.I., Fatoba, O.S., Popoola, M. and Pityana, S.L. 2016. The influence of heat treatment and process parameters optimization on hardness and corrosion properties of laser alloyed X12CrNiMo steel. Silicon, 8(4), pp 579-589 en_US
dc.identifier.issn 1876-990X
dc.description Copyright: 2016 Springer. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. The definitive version of the work is published in Silicon, 8(4), pp 579-589 en_US
dc.description.abstract Martensitic stainless steels are used in the production of steam turbine blades but their application is limited due to low hardness and poor corrosion resistance. Laser surface alloying and heat treatment of X12CrNiMo Martensitic stainless steel was conducted with the aim of enhancing hardness and corrosion properties. A Rofin Sinar Continuous Wave Nd: YAG solid-state laser was used to alloy the specimens. The electrochemical and hardness properties were studied using potentiodynamic polarization technique and Vickers micro hardness tester. The microstructures of the as-received, post-heated and pre-heated specimens were investigated by a Scanning Electron Microscope (SEM) and Optical Micrograph (OM) respectively. From the experimental results, the post-heated specimens exhibited the highest hardness property as compared to all other specimens. There was also significant improvement in the corrosion resistance of the post heated specimen compared to all other specimens and the substrate as evidenced by higher polarization resistance and lower corrosion rates. From the analysis of grey relational grade model, the significant laser processing parameters were identified. The results showed the influence of laser power and scanning speed on the corrosion rate, hardness and alloyed depth. The predicted results were found to be in good agreement with the experimental results. en_US
dc.language.iso en en_US
dc.publisher Springer en_US
dc.relation.ispartofseries Wokflow;18007
dc.subject Heat treatment en_US
dc.subject Corrosion resistance en_US
dc.subject Hardness en_US
dc.subject Laser surface alloying en_US
dc.subject Martensitic stainless steel en_US
dc.subject Grey relational grade en_US
dc.title The influence of heat treatment and process parameters optimization on hardness and corrosion properties of laser alloyed X12CrNiMo steel en_US
dc.type Article en_US

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