Intergranular oxidation of Ni-base alloy 718 with a focus on additive manufacturing

•Additively manufactured alloys 718 show an excellent oxidation resistance in isothermal conditions.•TiNbO4 is identified by EBSD inside the Cr2O3 oxide scale, in agreement with thermodynamics.•AM samples present intergranular oxidation kinetics similar to the wrought alloy's but with deeper oc...

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Veröffentlicht in:	Corrosion science 2020-07, Vol.170, p.108684-108699, Article 108684
Hauptverfasser:	Sanviemvongsak, Tom, Monceau, Daniel, Desgranges, Clara, Macquaire, Bruno
Format:	Artikel
Sprache:	eng
Schlagworte:	Additive manufacturing Alloys Aluminum Chemical Sciences Diffusion Electron beam melting Grain boundaries Grain boundaries oxidation Grain size Heterogeneity Internal oxidation Laser beam melting Material chemistry Nickel base alloys Oxidation Reaction kinetics Superalloys Thermocalc Titanium Wrought alloys
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