Comparative study of finishing techniques for age-hardened Inconel 718 alloy
| Autor: | Pedro José Arrazola, Haizea González-Barrio, Jon Ander Sarasua Miranda, Ander Trinidad Cristobal, Aitor Madariaga, Gaizka Gómez-Escudero, Pablo Fernández-Lucio |
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| Rok vydání: | 2021 |
| Předmět: |
Mining engineering. Metallurgy
Materials science Polishing Nickel-based alloy TN1-997 Metals and Alloys Surface finish Burnishing Burnishing (metal) Surfaces Coatings and Films Corrosion Surface integrity Biomaterials Machining Residual stress Ceramics and Composites Hammer peening Composite material Inconel |
| Zdroj: | Journal of Materials Research and Technology, Vol 15, Iss, Pp 5623-5634 (2021) |
| ISSN: | 2238-7854 |
| DOI: | 10.1016/j.jmrt.2021.11.024 |
| Popis: | Inconel 718 is a widely used alloy in the aeronautic sector due to its excellent mechanical and corrosion wear resistance under high temperature conditions. However, its good mechanical properties can be a double edge sword in terms of manufacturing, especially in those processes based in mechanical principles, such as machining or forming. Considering that most aeronautic components are exposed to cyclic load and temperature, fatigue resistance becomes critical, and therefore, the finishing processes. The surface integrity of a component plays an important role on its fatigue behaviour, as the most common crack initiation area is usually the surface. The present work compares three different mechanical finishing processes that confer better surface properties to the component: polishing, burnishing, and hammer-peening. Each one achieves different degrees of roughness, and residual stress on the surface. The study is not only focused on the resultant mechanical properties, but also in productivity and process robustness. It is concluded that each technology excels in a different property. |
| Databáze: | OpenAIRE |
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