Article ID Journal Published Year Pages File Type
5454819 Materials Characterization 2016 26 Pages PDF
Abstract
The microstructure and corrosion behavior of Al-10%Mg2Si alloy after heat treatment are investigated. For Al-10%Mg2Si in 3.5 wt.% NaCl solution, corrosion of α-Al phase initiates in (Al + Mg2Si) binary eutectic zones with electrochemical polarity change of Mg2Si phase, and expands along the eutectic Mg2Si precipitates. After heat treatment, eutectic Mg2Si transforms from long flakes and rods to short fibers, disks and spheroidized particles. The transformation of eutectic Mg2Si phase suppresses the rapid expansion of corrosion pits, which leads to enhancing the corrosion resistance of Al-10%Mg2Si alloy.
Related Topics
Physical Sciences and Engineering Materials Science Materials Science (General)
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