Investigation on Exfoliation Corrosion and Neutral Salt Spray Corrosion Resistanceof Al-6Mg Alloy with Addition of Scandium
来源期刊：材料保护2004年增刊第2期
论文作者：WANG Yue
关键词：Sc; Al-Mg alloy; exfoliation corrosion; neutral salt spray corrosion; microstructure;
摘 要：Al-6Mg-Sc alloy was prepared by means of melting-casting. Corrosionresistance of Al-6Mg-Sc alloy was studied in exfoliation corrosion and Neutral Salt Spray Test. Microstructure of the Al-6Mg-Sc alloy was investigated by using optical microscope and transmission electron micrograph( TEM ). It was found that additionof scandium served as a potent grain refiner, resulting a homogeneous, dispersed distribution of β-phrase in microstructure of the alloys. The discontinuous precipitation of β-phrase in grain boundaries therefore highly improved corrosion resistance of the alloys.
WANG Yue1
(1.Luoyang Ship Material Research Institute, Luoyang 471039, China)
摘要:Al-6Mg-Sc alloy was prepared by means of melting-casting. Corrosionresistance of Al-6Mg-Sc alloy was studied in exfoliation corrosion and Neutral Salt Spray Test. Microstructure of the Al-6Mg-Sc alloy was investigated by using optical microscope and transmission electron micrograph( TEM ). It was found that additionof scandium served as a potent grain refiner, resulting a homogeneous, dispersed distribution of β-phrase in microstructure of the alloys. The discontinuous precipitation of β-phrase in grain boundaries therefore highly improved corrosion resistance of the alloys.
关键词:Sc; Al-Mg alloy; exfoliation corrosion; neutral salt spray corrosion; microstructure;
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