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Effect of plasma nitriding process on the fatigue and high temperature corrosion resistance of Inconel 740H nickel alloy by Mateusz Kopec; Dominika Gorniewicz; Dominik Kukla; Izabela Barwinska; Stanisław Jóźwiak; Ryszard Sitek; Zbigniew L. Kowalewski is a Engineering article available to read on EtoBox.
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## Abstract The paper presents a comparison of microhardness, fatigue and high temperature corrosion of Inconel 740H nickel alloy in its as-received state and the same material with nitrided surface layers. The nitrided layers were produced using traditional glow discharge nitriding (specimens nitriding on the cathode potential) and an active screen (specimens nitriding at the plasma potential). A microstructure of the layers was characterized through the scanning electron microscopy, X-ray energy dispersive spectroscopy and X-ray diffraction analysis. Mechanical properties of the nitrided Inconel 740H alloy were examined using microhardness measurements and standard fatigue tests. It was found that Inconel 740H with a nitrided surface exhibited an improved fatigue response of 50 MPa in the whole range of stress amplitudes from 350 to 650 MPa and almost 325% increase of hardness for plasma modified surface and 250% for cathode modified surface. Additionally, the application of cathode nitriding enhanced the corrosion resistance of the alloy in question and effectively protected it against a high temperature oxidation.
Who reads Effect of plasma nitriding process on the fatigue and high temperature corrosion resistance of Inconel 740H nickel alloy?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Mateusz Kopec; Dominika Gorniewicz; Dominik Kukla; Izabela Barwinska; Stanisław Jóźwiak; Ryszard Sitek; Zbigniew L. Kowalewski
- Publisher
- Springer Science and Business Media LLC
- Published
- 2022
- Language
- EN
- Field
- Engineering (Physical Sciences)