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Figueiredo, Miguel
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Publications (6/6 displayed)
- 2022Fatigue Assessment of Inconel 625 Produced by Directed Energy Deposition from Miniaturized Specimenscitations
- 2020Fatigue behaviour of bolted joints for rack structurescitations
- 2020Fatigue behavior of cold roll-formed rail profiles for rack structures
- 2017Toughness of a brittle epoxy resin reinforced with micro cork particles: Effect of size, amount and surface treatmentcitations
- 2017Analysis of the effect of size, amount and surface treatment on the tensile strain of a brittle adhesive reinforced with micro cork particlescitations
- 2008Drilling of fibre reinforced plastic laminatescitations
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article
Fatigue Assessment of Inconel 625 Produced by Directed Energy Deposition from Miniaturized Specimens
Abstract
In recent years, the industrial application of Inconel 625 has grown significantly. This material is a nickel-base alloy, which is well known for its chemical resistance and mechanical properties, especially in high-temperature environments. The fatigue performance of parts produced via Metallic Additive Manufacturing (MAM) heavily rely on their manufacturing parameters. Therefore, it is important to characterize the properties of alloys produced by a given set of parameters. The present work proposes a methodology for characterization of the mechanical properties of MAM parts, including the material production parametrization by Laser Directed Energy Deposition (DED). The methodology consists of the testing of miniaturized specimens, after their production in DED, supported by a numerical model developed and validated by experimental data for stress calculation. An extensive mechanical characterization, with emphasis on high-cycle fatigue, of Inconel 625 produced via DED is herein discussed. The results obtained using miniaturized specimens were in good agreement with standard-sized specimens, therefore validating the applied methodology even in the case of some plastic effects. Regarding the high-cycle fatigue properties, the samples produced via DED presented good fatigue performance, comparable with other competing Metallic Additive Manufactured (MAMed) and conventionally manufactured materials.