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Occurrence of galling in hot forming is detrimental to the quality of produced parts and process economy. Material transfer from Al–Si coated work-piece to the tool material has been studied in this work. PVD coatings (AlCrN, TiAlN and DLC) on tool steel substrate have been considered as well as plasma nitriding and their tribological behaviour was compared to the case of an untreated tool steel....
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