Microstructure and corrosion behavior of Al–10%Mg2Si cast alloy after heat treatment
Microstructure and corrosion behavior of Al–10%Mg2Si cast alloy after heat treatment
复制标题
显微组织%20and%20腐蚀%20行为%20of%20Al~10%Mg2Si%20cast%20合金%20after%20heat%20treatment
DOI:
10.1016/j.matchar.2016.10.027
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发表时间:
2016-12
影响因子:
4.7
通讯作者:
Li Huijun
中科院分区:
文献类型:
--
作者:
Li Chong;Sun Jiayue;Li Zedi;Gao Zhiming;Liu Yongchang;Yu Liming;Li Huijun
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 ofα-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.
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