Monolayer TiAlN and multilayer TiAlN/CrN PVD coatings as surface modifiers to mitigate fretting fatigue of AISI P20 steel

Raafat Ibrahim, Mohamed Rahmat, Reza Hashemi Oskouei, Raman Singh

    Research output: Contribution to journalArticle

    17 Citations (Scopus)

    Abstract

    In many sense, the role of a corrosion film and a surface coating in fatigue crack initiation is similar. The performance of the TiAlN and TiAlN/CrN PVD coatings in resisting fretting fatigue failure of the AISI P20 steel was investigated. A significant increase in fretting fatigue life was observed; up to 210% and 193% when clamped at 5.6kN and 12.6kN, respectively for the TiAlN coated specimens, and up to 798% and 762% when clamped at 5.6kN and 12.6kN, respectively for the multilayer TiAlN/CrN coated specimens. Both PVD coatings showed a beneficial compressive residual stress and substantial increases in its resistance to plastic deformation (H3/E2) as well as surface hardness compared to the uncoated AISI P20 tool steel.

    Original languageEnglish
    Pages (from-to)64-78
    Number of pages15
    JournalEngineering Fracture Mechanics
    Volume137
    DOIs
    Publication statusE-pub ahead of print - 2015

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