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High temperature oxidation of IN 718 manufactured by laser beam melting and electron beam melting: Effect of surface topography

Sanviemvongsak, Tom and Monceau, Daniel and Macquaire, Bruno High temperature oxidation of IN 718 manufactured by laser beam melting and electron beam melting: Effect of surface topography. (2018) Corrosion Science, 141. 127-145. ISSN 0010-938X

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Official URL: https://doi.org/10.1016/j.corsci.2018.07.005

Abstract

The oxidation behaviour of IN 718 alloys produced by laser beam melting and electron beam melting was compared to that of the wrought alloy at 850 °C in laboratory air. Oxide scales of all alloys were similar in nature and morphology with small differences due to powder particles sintered on the surface of additive manufacturing parts. Nevertheless, major differences in surface topography were noticed, these could affect surface area estimations and consequentlymass gain estimations. A quantitative correlation was determined between apparent parabolic rate constant and surface area.

Item Type:Article
HAL Id:hal-01989245
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > SAFRAN (FRANCE)
Laboratory name:
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Deposited By: cirimat webmestre
Deposited On:22 Jan 2019 11:17

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