2002•Corrsion Science and Technology ProtectionRequires access

EFFECT OF MICROSTRUCTURE ON CORROSION RESISTANCE OF ELECTROLYTIC AlSi7Mg0.3 ALLOYS

Xia Weiming

Abstract

The effect of microstructure on corrosion morphology of ZL101 alloy,Electrolytic ZL101 alloy and A356 alloy in a simulated atmospheric environment with moisture is studied.The experimental results on microstructure and corrosion morphology by SEM and chemical composition analysis by WDS indicate that the excellent corrosion resistance of electrolytic Al-Si alloy is related to both the homogeneity of chemical composition and the fine microstructure of alloy.The results of XDA indicate that less amount of impurity phase in A356 is responsible for its better corrosion resistance.

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Key concepts: Microstructure, Alloy, Corrosion, Metallurgy, Materials science, 6111 aluminium alloy, Homogeneity (statistics), Electrolyte