Malatjia, NPopoola, APIPityana, Sisa LLengopeng, T2022-01-272022-01-272021-06Malatjia, N., Popoola, A., Pityana, S.L. & Lengopeng, T. 2021. Fabrication of Ti10Fe5Si5Cr3Nb composite coatings on Ti-6Al-4V alloy using laser cladding technique. <i>Materials Research, 24(5).</i> http://hdl.handle.net/10204/122421516-14391980-5373https://doi.org/10.1590/1980-5373-MR-2021-0080http://hdl.handle.net/10204/12242Ti10Fe5Si5Cr3Nb composite coatings were fabricated using laser cladding technique. Laser power was varied from 800W to 1200W while the scanning speed was kept constant at 1.5 m/min. The microstructural analysis of the samples was conducted by using optical microscope, X-ray diffractometer and scanning electron microscope coupled with energy dispersive spectroscopy. Potentiodynamic polarization and diamond indenter were used to study the corrosion and microhardness properties of the alloy. The alloy exhibited a dendritic microstructure with Si-rich dispersed phase. Grain coarsening was observed to be dependent on coating depth. The microhardness was high at the top and decreased with coating depth. No improvement in corrosion resistance was noticed but the presence of Cr in the alloy promoted passivation.FulltextenLaser metal depositionSubstrate heatingComposite coatingMicrostructuresMicrohardnessArticleMalatjia, N., Popoola, A., Pityana, S. L., & Lengopeng, T. (2021). Fabrication of Ti10Fe5Si5Cr3Nb composite coatings on Ti-6Al-4V alloy using laser cladding technique. <i>Materials Research, 24(5)</i>, http://hdl.handle.net/10204/12242Malatjia, N, API Popoola, Sisa L Pityana, and T Lengopeng "Fabrication of Ti10Fe5Si5Cr3Nb composite coatings on Ti-6Al-4V alloy using laser cladding technique." <i>Materials Research, 24(5)</i> (2021) http://hdl.handle.net/10204/12242Malatjia N, Popoola A, Pityana SL, Lengopeng T. Fabrication of Ti10Fe5Si5Cr3Nb composite coatings on Ti-6Al-4V alloy using laser cladding technique. Materials Research, 24(5). 2021; http://hdl.handle.net/10204/12242.TY - Article AU - Malatjia, N AU - Popoola, API AU - Pityana, Sisa L AU - Lengopeng, T AB - Ti10Fe5Si5Cr3Nb composite coatings were fabricated using laser cladding technique. Laser power was varied from 800W to 1200W while the scanning speed was kept constant at 1.5 m/min. The microstructural analysis of the samples was conducted by using optical microscope, X-ray diffractometer and scanning electron microscope coupled with energy dispersive spectroscopy. Potentiodynamic polarization and diamond indenter were used to study the corrosion and microhardness properties of the alloy. The alloy exhibited a dendritic microstructure with Si-rich dispersed phase. Grain coarsening was observed to be dependent on coating depth. The microhardness was high at the top and decreased with coating depth. No improvement in corrosion resistance was noticed but the presence of Cr in the alloy promoted passivation. DA - 2021-06 DB - ResearchSpace DP - CSIR J1 - Materials Research, 24(5) KW - Laser metal deposition KW - Substrate heating KW - Composite coating KW - Microstructures KW - Microhardness LK - https://researchspace.csir.co.za PY - 2021 SM - 1516-1439 SM - 1980-5373 T1 - Fabrication of Ti10Fe5Si5Cr3Nb composite coatings on Ti-6Al-4V alloy using laser cladding technique TI - Fabrication of Ti10Fe5Si5Cr3Nb composite coatings on Ti-6Al-4V alloy using laser cladding technique UR - http://hdl.handle.net/10204/12242 ER -24969