Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7921829 | Materials Chemistry and Physics | 2018 | 20 Pages |
Abstract
This study reports on de-alloying corrosion in a heat-affected zone (HAZ) of marine propeller Mn-Al bronze. The HAZ consisted of α, βâ phases and a 2-5â¯Î¼m thick α/βâ interface layer. The βâ phase having high aluminium content was expected to corrode first, it found that the de-alloying initiated from the α/βâ interface layer. TEM diffraction patterns and images showed Cu3Mn2Al and orthorhombic L-J precipitates in Cu2MnAl matrix plus numerous dislocations and strain fields, which caused the layer to be corroded first. This study suggests that microstructure is a critical factor for corrosion more than the highly reactive aluminium content.
Keywords
Related Topics
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Materials Science
Electronic, Optical and Magnetic Materials
Authors
P. Punburi, N. Tareelap, N. Srisukhumbowornchai, V. Yordsri,