Fabrication of Fe–TiC–Al2O3 composites on the surface of steel using a TiO2–Al–C–Fe combustion reaction induced by gas tungsten arc cladding

Mahmood Sharifitabar; Jalil Vahdati Khaki; Mohsen Haddad Sabzevar

doi:10.1007/s12613-016-1227-y

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Mahmood Sharifitabar, Jalil Vahdati Khaki, and Mohsen Haddad Sabzevar, Fabrication of Fe–TiC–Al₂O₃ composites on the surface of steel using a TiO₂–Al–C–Fe combustion reaction induced by gas tungsten arc cladding, Int. J. Miner. Metall. Mater., 23(2016), No. 2, pp.193-204. https://dx.doi.org/10.1007/s12613-016-1227-y

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Fabrication of Fe–TiC–Al₂O₃ composites on the surface of steel using a TiO₂–Al–C–Fe combustion reaction induced by gas tungsten arc cladding

摘要: The aim of the present study was to fabricate Fe–TiC–Al₂O₃ composites on the surface of medium carbon steel. For this purpose, TiO₂–3C and 3TiO₂–4Al–3C–xFe (0 ≤ x ≤ 4.6 by mole) mixtures were pre-placed on the surface of a medium carbon steel plate. The mixtures and substrate were then melted using a gas tungsten arc cladding process. The results show that the martensite forms in the layer produced by the TiO₂–3C mixture. However, ferrite–Fe₃C–TiC phases are the main phases in the microstructure of the clad layer produced by the 3TiO₂–4Al–3C mixture. The addition of Fe to the TiO₂–4Al–3C reactants with the content from 0 to 20wt% increases the volume fraction of particles, and a composite containing approximately 9vol% TiC and Al₂O₃ particles forms. This composite substantially improves the substrate hardness. The mechanism by which Fe particles enhance the TiC + Al₂O₃ volume fraction in the composite is determined.

Fabrication of Fe–TiC–Al₂O₃ composites on the surface of steel using a TiO₂–Al–C–Fe combustion reaction induced by gas tungsten arc cladding

Abstract: The aim of the present study was to fabricate Fe–TiC–Al₂O₃ composites on the surface of medium carbon steel. For this purpose, TiO₂–3C and 3TiO₂–4Al–3C–xFe (0 ≤ x ≤ 4.6 by mole) mixtures were pre-placed on the surface of a medium carbon steel plate. The mixtures and substrate were then melted using a gas tungsten arc cladding process. The results show that the martensite forms in the layer produced by the TiO₂–3C mixture. However, ferrite–Fe₃C–TiC phases are the main phases in the microstructure of the clad layer produced by the 3TiO₂–4Al–3C mixture. The addition of Fe to the TiO₂–4Al–3C reactants with the content from 0 to 20wt% increases the volume fraction of particles, and a composite containing approximately 9vol% TiC and Al₂O₃ particles forms. This composite substantially improves the substrate hardness. The mechanism by which Fe particles enhance the TiC + Al₂O₃ volume fraction in the composite is determined.

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