Title:
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Contact Fatigue Behavior of PVD-Coated Steel
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Author:
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Ramírez, Giselle; Tarres, Elena; Casas Aguirregomezcorta, Begoña; Valls, Isaac; Martínez Martínez, María del Rosario; Llanes Pitarch, Luis Miguel
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. CIEFMA - Centre d'Integritat Estructural, Micromecànica i Fiabilitat dels Materials |
Abstract:
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In this study, the contact fatigue behavior of a PVD TiN coating deposited onto DIN 1.2379 coldwork
tool steel is assessed by cyclic spherical indentation. Experimental characterization
focuses on the evaluation of critical contact pressures, under both monotonic and cyclic
loading, affiliated to the emergence of distinct damage events: circumferential cracking and
cohesive spallation at the film or decohesion at the substrate–coating interface. Experimental
findings indicate that the coated tool steel studied is susceptible to mechanical degradation
under fluctuating contact loads, and the corresponding effective fatigue sensitivity varies
depending on the mechanism recalled for defining critical damage. |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials::Assaig de fatiga -Fatigue -Thin films -Steel -Fatiga -Pel·lícules fines -Acer |
Rights:
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Document type:
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Article - Published version Article |
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