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  • The influence of normal load and slip amplitude on fretting behaviour of AlSi7Mg-T6
    Pukl, Boris ...
    Investigations into the fretting behaviour of the AlSi7Mg-T6 aluminium alloy are presented in this paper. With regard to the surface finishing conditions of the material, two types of specimens were ... considered: (i) machined and (ii)machined and shot peened specimens. The research was focused on investigations into the influence of the number of cycles, normal load (contact pressure) and the amplitude of slip on the fretting behaviour of the material. Fretting tests were performed under various running conditions with regard to normal load levels and slip amplitudes. The coefficient of friction between the surfaces at the fretting junction was continuously recorded. The fretting damage on the aluminium specimens was studied by means of microscopic and EPM analyses. With regard to the evolution of coefficient of friction curves, two modes of fretting process were identified. They differ in the transition from the initial phase to the steady-state fretting regime and depend primarily on the severity of the running conditions and the material properties. In general, higher values of the coefficient of friction were observed with machined and shot peened specimens as compared with those which were machined. It was found that for a given normal load, the coefficient of friction increases with an increased amplitude of slip while, for a given amplitude of slip, it decreases with an increased normal load.
    Vir: Materiálové inžinierstvo = Materials engineering. - ISSN 1335-0803 (Vol. 5, no. 13, 1998, str. 52-59)
    Vrsta gradiva - članek, sestavni del
    Leto - 1998
    Jezik - angleški
    COBISS.SI-ID - 3026971

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