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Corrosion behavior of an Al-6Mg-Sc-Zr alloy
Alternative TitleCorrosion behavior of an Al-6Mg-Sc-Zr alloy
Xu GX1; Tao BW1; Liu JH1; Li SM1
2005
Source PublicationRARE METALS
ISSN1001-0521
Volume24Issue:3Pages:246-251
AbstractThe 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-Se-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 refined grains and promoted the formation of homogeneous discontinuous distribution of beta-phase in the alloy base, which much contributed to good corrosion resistance of the Al-6Mg-Sc-Zr alloy.
Other AbstractThe 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.
KeywordSC RECRYSTALLIZATION corrosion Al-Mg-Sc-Zr alloy SCC test exfoliation corrosion scandium
Indexed ByCSCD
Language英语
CSCD IDCSCD:2021057
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/143591
Collection中国科学院金属研究所
Affiliation1.Beijing University Aeronaut & Astronaut
2.中国科学院金属研究所
Recommended Citation
GB/T 7714
Xu GX,Tao BW,Liu JH,et al. Corrosion behavior of an Al-6Mg-Sc-Zr alloy[J]. RARE METALS,2005,24(3):246-251.
APA Xu GX,Tao BW,Liu JH,&Li SM.(2005).Corrosion behavior of an Al-6Mg-Sc-Zr alloy.RARE METALS,24(3),246-251.
MLA Xu GX,et al."Corrosion behavior of an Al-6Mg-Sc-Zr alloy".RARE METALS 24.3(2005):246-251.
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