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  • The effect of sliding distance and temperature on the initiation and formation of the aluminium alloy transfer to the uncoated and coated tool steel [Elektronski vir]
    Jerina, Jure ; Kalin, Mitjan
    In processes of forming aluminium alloys, there are several difficulties in controlling process parameters and product quality due to the unfavourable contact conditions and tribological properties ... of the contact surfaces. Because of the lower required forming forces and higher material formability, most of the aluminium bulkmetal forming (i.e. forging, extrusion) is performed at elevated temperatures, which causes substantial thermal and mechanical stresses and die surface wear due to the abrasion and adhesion. Adhesion and in particular formation of the aluminium alloys transfer on the surface of die bearing surface is one of the predominant reasons for tool failure and inadequate surface quality of products. The present work was focused on the aluminium alloy (EN AW6060) transfer initiation and evolution onto the coated (CrN) and uncoated nitrided hot work tool steel (AISI H13) in a temperature range from 20 °C to 500 °C. All tests were performed on the new Load scanner tribo test rig in a dry sliding contact conditions. The contact has been investigated in terms of the surface area and volume of the transferred aluminium alloy to the uncoated and coated tool steel surface, the topography of the wear trace and corresponding change in the coefficient of friction.
    Vir: Nordtrib 2014 [Elektronski vir] (Datoteka Nordtrib2014_FinalPaper_25 (6 f.))
    Vrsta gradiva - prispevek na konferenci
    Leto - 2014
    Jezik - angleški
    COBISS.SI-ID - 13532443

vir: Nordtrib 2014 [Elektronski vir] (Datoteka Nordtrib2014_FinalPaper_25 (6 f.))
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