Cladding of Tribaloy T400 on Steel Substrates using a High Power Nd: YAG Laser

Wei Ya (Corresponding Author), Belavendram Pathiraj, David T.A. Matthews, Mark Bright , Stefan Melzer

    Research output: Contribution to journalArticleAcademicpeer-review

    3 Citations (Scopus)

    Abstract

    Tribally T-400 is a cobalt based alloy with molybdenum additions, which has been developed for improved resistance to high temperature wear, galling and corrosion. Its hardness is provided by a hard intermetallic Laves phase, dispersed in a tough matrix of cobalt rich eutectic or solid solution. However, cracking limits its applications such as hard facing using laser surface cladding/coating. The primary aim of this work is accomplished by cladding crack free Tribaloy T-400 layer using a high power Nd:YAG laser. The optimal process conditions of cladding crack free Tribaloy T-400 coating on different steel substrates were obtained. The effects of iron dilution on the hardness of cladded Tribaloy T-400 coating are investigated. Dilution determined from clad geometry is verified from dilution calculated from an analysis of the composition of the clad. Microstructures of clad layers produced using optimal process parameters with and without preheating the substrate were analysed by Scanning Electron Microscopy (SEM). The chemical compositions of different phases present in the clad were analysed by Energy Dispersive X-ray Spectroscopy (EDS). Presence of phases with FCC and BCC structures and Laves phase (Co3.6Mo2Si0.4) in the clad were identified and analysed by X-ray Diffraction (XRD). The residual stresses in the clads were evaluated using hole drilling technique. The correlation between the process conditions and the resulting microstructures are discussed. Based on the results of this research, further scaling up to industrial application of laser cladding of Tribaloy T-400 is promising.
    Original languageEnglish
    Pages (from-to)323-333
    Number of pages11
    JournalSurface and coatings technology
    Volume350
    DOIs
    Publication statusPublished - 25 Sep 2018

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    Steel
    high power lasers
    Dilution
    YAG lasers
    steels
    Cobalt
    dilution
    Coatings
    Laves phases
    Lasers
    Substrates
    Hardness
    coatings
    Cracks
    Laser cladding
    Microstructure
    Hard facing
    cobalt
    Molybdenum
    hardness

    Cite this

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    title = "Cladding of Tribaloy T400 on Steel Substrates using a High Power Nd: YAG Laser",
    abstract = "Tribally T-400 is a cobalt based alloy with molybdenum additions, which has been developed for improved resistance to high temperature wear, galling and corrosion. Its hardness is provided by a hard intermetallic Laves phase, dispersed in a tough matrix of cobalt rich eutectic or solid solution. However, cracking limits its applications such as hard facing using laser surface cladding/coating. The primary aim of this work is accomplished by cladding crack free Tribaloy T-400 layer using a high power Nd:YAG laser. The optimal process conditions of cladding crack free Tribaloy T-400 coating on different steel substrates were obtained. The effects of iron dilution on the hardness of cladded Tribaloy T-400 coating are investigated. Dilution determined from clad geometry is verified from dilution calculated from an analysis of the composition of the clad. Microstructures of clad layers produced using optimal process parameters with and without preheating the substrate were analysed by Scanning Electron Microscopy (SEM). The chemical compositions of different phases present in the clad were analysed by Energy Dispersive X-ray Spectroscopy (EDS). Presence of phases with FCC and BCC structures and Laves phase (Co3.6Mo2Si0.4) in the clad were identified and analysed by X-ray Diffraction (XRD). The residual stresses in the clads were evaluated using hole drilling technique. The correlation between the process conditions and the resulting microstructures are discussed. Based on the results of this research, further scaling up to industrial application of laser cladding of Tribaloy T-400 is promising.",
    author = "Wei Ya and Belavendram Pathiraj and Matthews, {David T.A.} and Mark Bright and Stefan Melzer",
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    Cladding of Tribaloy T400 on Steel Substrates using a High Power Nd : YAG Laser. / Ya, Wei (Corresponding Author); Pathiraj, Belavendram ; Matthews, David T.A.; Bright , Mark ; Melzer, Stefan.

    In: Surface and coatings technology, Vol. 350, 25.09.2018, p. 323-333.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Cladding of Tribaloy T400 on Steel Substrates using a High Power Nd

    T2 - YAG Laser

    AU - Ya, Wei

    AU - Pathiraj, Belavendram

    AU - Matthews, David T.A.

    AU - Bright , Mark

    AU - Melzer, Stefan

    PY - 2018/9/25

    Y1 - 2018/9/25

    N2 - Tribally T-400 is a cobalt based alloy with molybdenum additions, which has been developed for improved resistance to high temperature wear, galling and corrosion. Its hardness is provided by a hard intermetallic Laves phase, dispersed in a tough matrix of cobalt rich eutectic or solid solution. However, cracking limits its applications such as hard facing using laser surface cladding/coating. The primary aim of this work is accomplished by cladding crack free Tribaloy T-400 layer using a high power Nd:YAG laser. The optimal process conditions of cladding crack free Tribaloy T-400 coating on different steel substrates were obtained. The effects of iron dilution on the hardness of cladded Tribaloy T-400 coating are investigated. Dilution determined from clad geometry is verified from dilution calculated from an analysis of the composition of the clad. Microstructures of clad layers produced using optimal process parameters with and without preheating the substrate were analysed by Scanning Electron Microscopy (SEM). The chemical compositions of different phases present in the clad were analysed by Energy Dispersive X-ray Spectroscopy (EDS). Presence of phases with FCC and BCC structures and Laves phase (Co3.6Mo2Si0.4) in the clad were identified and analysed by X-ray Diffraction (XRD). The residual stresses in the clads were evaluated using hole drilling technique. The correlation between the process conditions and the resulting microstructures are discussed. Based on the results of this research, further scaling up to industrial application of laser cladding of Tribaloy T-400 is promising.

    AB - Tribally T-400 is a cobalt based alloy with molybdenum additions, which has been developed for improved resistance to high temperature wear, galling and corrosion. Its hardness is provided by a hard intermetallic Laves phase, dispersed in a tough matrix of cobalt rich eutectic or solid solution. However, cracking limits its applications such as hard facing using laser surface cladding/coating. The primary aim of this work is accomplished by cladding crack free Tribaloy T-400 layer using a high power Nd:YAG laser. The optimal process conditions of cladding crack free Tribaloy T-400 coating on different steel substrates were obtained. The effects of iron dilution on the hardness of cladded Tribaloy T-400 coating are investigated. Dilution determined from clad geometry is verified from dilution calculated from an analysis of the composition of the clad. Microstructures of clad layers produced using optimal process parameters with and without preheating the substrate were analysed by Scanning Electron Microscopy (SEM). The chemical compositions of different phases present in the clad were analysed by Energy Dispersive X-ray Spectroscopy (EDS). Presence of phases with FCC and BCC structures and Laves phase (Co3.6Mo2Si0.4) in the clad were identified and analysed by X-ray Diffraction (XRD). The residual stresses in the clads were evaluated using hole drilling technique. The correlation between the process conditions and the resulting microstructures are discussed. Based on the results of this research, further scaling up to industrial application of laser cladding of Tribaloy T-400 is promising.

    U2 - 10.1016/j.surfcoat.2018.06.069

    DO - 10.1016/j.surfcoat.2018.06.069

    M3 - Article

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    SP - 323

    EP - 333

    JO - Surface and coatings technology

    JF - Surface and coatings technology

    SN - 0257-8972

    ER -