Sigma-phase formation in high chromium ferritic steels at 650°C

•Formation of σ-FeCr phase at 650°C in alloys Fe–30%Cr–2%(Mn,Mo,W) was investigated.•Formation of σ-FeCr phase was accelerated by interdiffusion with Ni-coating.•Mechanism of heterogeneous nucleation of σ-FeCr at BCC/FCC interface was discussed.•Mechanisms of homogenous and heterogeneous nucleation...

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Veröffentlicht in:	Journal of alloys and compounds 2015-07, Vol.638, p.405-418
Hauptverfasser:	Niewolak, L., Garcia-Fresnillo, L., Meier, G.H., Quadakkers, W.J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Alloys Chromium Diffusion Ferrous alloys Formations Fuel cells Grain boundaries High-temperature alloys Molybdenum Nickel Nucleation Phase diagrams Phase transitions Tungsten
Online-Zugang:	Volltext
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