Corrosion properties of friction–stir processed cast NiAl bronze

Friction–stir processing (FSP) was adopted to modify the microstructure of a cast Cu–9Al–4.5Ni–4Fe NiAl bronze alloy (NAB). After FSP, the initial coarse microstructure of the cast NAB was transformed to a fine structure, and the porosity defects were eliminated. The microstructure modification chan...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Corrosion science 2010-05, Vol.52 (5), p.1610-1617
Hauptverfasser: Ni, D.R., Xiao, B.L., Ma, Z.Y., Qiao, Y.X., Zheng, Y.G.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Friction–stir processing (FSP) was adopted to modify the microstructure of a cast Cu–9Al–4.5Ni–4Fe NiAl bronze alloy (NAB). After FSP, the initial coarse microstructure of the cast NAB was transformed to a fine structure, and the porosity defects were eliminated. The microstructure modification changed the corrosion behavior of the NAB in a 3.5% NaCl solution. In a static immersion corrosion test, the FSP NAB exhibited significantly greater corrosion resistance compared to the cast counterpart. The polarization curve and electrochemical impedance spectroscopic (EIS) results indicated that the FSP NAB showed slightly lower electrochemical corrosion resistance.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2010.02.026