Abstract
7075-T6 is one of the most performing aluminium alloys, considering its mechanical properties and good fatigue behaviour. In this work the influence of WC/C and DLC PVD coatings on the fatigue behaviour was investigated by rotating bending tests at 2·105cycles. The fatigue behaviour of polished and untreated specimens was considered as reference. In order to decouple the effect of the deposition temperature from the coating one, some uncoated specimens were submitted to the thermal cycles of the WC/C and DLC processes and then tested under fatigue loading. Fatigue life was determined using a step-loading technique. SEM micrographs of the fracture surfaces were taken in order to characterize the fatigue mechanisms of coated and uncoated specimens.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
12 articles.
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1. Impact of DLC Coating Deposition on the Fatigue Strength of Al-7075-T6 Aluminum Alloy;Journal of Material Science and Technology Research;2023-03-29
2. Fatigue of Light Alloys;Comprehensive Structural Integrity;2023
3. Finite Element Analysis and Experiments for Predicting Fatigue and Rolling Contact Fatigue Behavior of Spur Gears;Periodica Polytechnica Mechanical Engineering;2022-10-13
4. Effects of FOD on fatigue strength of 7075-T6 hourglass specimens;IOP Conference Series: Materials Science and Engineering;2021-02-01
5. Effects of thin hard film deposition on fatigue strength of AA7075-T6;Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science;2020-12-18