The formation and characterization of fretting-induced degradation layers using quenched and tempered steel

Verner Nurmi, Jouko Hintikka, Janne Juoksukangas, Mari Honkanen, Minnamari Vippola, Arto Lehtovaara, Antti Mäntylä, Joona Vaara, Tero Frondelius

    Research output: Contribution to journalArticleScientificpeer-review

    14 Citations (Scopus)
    24 Downloads (Pure)

    Abstract

    Fretting movement is dangerous for machines, because it can cause cracking and surface degradation. The aim of this work was to characterize fretting-induced material degradation in large flat-on-flat contacts without edge effects in a sliding direction using quenched and tempered steel 34CrNiMo6. The focus was on the adhesive contact spots, which were formed under a wide variety of operating conditions. Characterization methods were optical microscopy, Vickers hardness tests and scanning electron microscopy. Three different degradation areas were observed: a general deformation layer, a tribologically transformed structure and a third body layer. All the degradation phases have high hardness and low ductility compared to the base material. The formation and behavior of the degradation layers in different operating conditions were discussed.

    Original languageEnglish
    Pages (from-to)258-267
    Number of pages10
    JournalTribology International
    Volume131
    Early online date14 Sep 2018
    DOIs
    Publication statusPublished - 1 Mar 2019
    Publication typeA1 Journal article-refereed

    Keywords

    • Adhesion
    • Fretting
    • Friction
    • Microscopy

    Publication forum classification

    • Publication forum level 2

    ASJC Scopus subject areas

    • Mechanics of Materials
    • Mechanical Engineering
    • Surfaces and Interfaces
    • Surfaces, Coatings and Films

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