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Corrosion behavior of an Al-6Mg-Sc-Zr alloy
查看参考文献9篇
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文摘
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The corrosion behavior of an Al-6Mg-Sc-Zr alloy was studied and compared with that of an Al-6Mg-Zr alloy.The addition of scandium into the Al-6Mg-Zr alloy reduced the susceptibility to exfoliation corrosion. By using the constant load tensile method in a 3.5 wt.% NaCl solution, the resistance to SCC of the Al-6Mg-Sc-Zr alloy was higher than that of the Al-6Mg-Zr alloy. When the specimens were not applied with an anodic current, the Al-6Mg-Sc-Zr alloy was resistance to SCC and no brittle cracking was found on the fracture surface. When an anodic current was applied, the Al-6Mg-Sc-Zr alloy specimens failed as a result of accelerated corrosion rather than SCC. It was believed that the addition of scandium resulted in (Al3Sc, Zr) particles that greatly refmed grains and promoted the formation of homogeneous discontinuous distribution of β-phase in the alloy base, which much contributed to good corrosion resistance of the Al-6Mg-Sc-Zr alloy. |
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来源
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Rare Metals
,2005,24(3):246-251 【核心库】
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关键词
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corrosion
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Al-Mg-Sc-Zr alloy
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SCC test
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exfoliation corrosion
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scandium
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地址
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School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing, 100083
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1001-0521 |
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学科
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金属学与金属工艺 |
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文献收藏号
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CSCD:2021057
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