Effect of Al Content on the Corrosion Behavior of Extruded Dilute Mg–Al–Ca–Mn Alloy

Effect of Al Content on the Corrosion Behavior of Extruded Dilute Mg–Al–Ca–Mn Alloy

The microstructure, extrusion texture and corrosion behavior of extruded dilute Mg–Al–Ca–Mn alloy with different Al contents were investigated. The corrosion rate of the alloy was more sensitive to the Fe impurities. The 1.2 wt% Al showed the lowest corrosion rate, which was mainly attributed to the...

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Veröffentlicht in:Acta metallurgica sinica : English letters 2023, Vol.36 (1), p.77-90
Hauptverfasser: Liu, Bao-Chang, Zhang, Shuai, Xiong, Hong-Wei, Dai, Wen-Hao, Ma, Yin-Long
Format: Artikel
Sprache:eng
Schlagworte:
Acids
Aluminum
Aluminum base alloys
Calcium
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Corrosion effects
Corrosion potential
Corrosion rate
Corrosion resistance
Dilution
Electrodes
Extrusion
Grain size
Hydrogen
Magnesium
Magnesium alloys
Manganese base alloys
Materials Science
Metallic Materials
Nanotechnology
Organometallic Chemistry
Software
Spectroscopy/Spectrometry
Spectrum analysis
Surface layers
Texture
Tribology
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Zusammenfassung:The microstructure, extrusion texture and corrosion behavior of extruded dilute Mg–Al–Ca–Mn alloy with different Al contents were investigated. The corrosion rate of the alloy was more sensitive to the Fe impurities. The 1.2 wt% Al showed the lowest corrosion rate, which was mainly attributed to the weakening of the cathode effect caused by the increase of the Al and the decrease of the Fe in the precipitated phase. Refined grains, stronger basal surface texture and higher corrosion potential deriving from the higher Al content of the matrix also further enhanced the corrosion resistance of the matrix.
ISSN:1006-7191
2194-1289
DOI:10.1007/s40195-022-01451-1