首页|Improved intergranular corrosion resistance of Al-Mg-Mn alloys with Sc and Zr additions
Improved intergranular corrosion resistance of Al-Mg-Mn alloys with Sc and Zr additions
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NSTL
Elsevier
Al-5.8Mg-0.4Mn with minor alloying additions of Sc and Zr was investigated via electrochemical testing and nitric acid mass loss testing (NAMLT) in order to reveal the influence of Sc and Zr upon sensitization and intergranular corrosion. The Al-Mg-Mn alloys were also analysed using an electron probe microanalyzer, indicating that β-phase (Al3Mg2) was more likely to precipitate around rectangular or cubic Al6Mn particles. Results reveal that the strength and intergranular corrosion resistance of Al-5.8Mg-0.4Mn was improved by the combined addition of Sc and Zr. The Al3(Sc1-xZrx) dispersoids can lead to an alteration of the relative proportion of low angle grain boundaries, and lower volume fraction of β-phase was observed for Al-5.8Mg-0.4Mn-xSc-yZr relative to the Sc and Zr free alloy.
Al-Mg alloysgrain boundary misorientationintergranular corrosionSc and Zrsensitizationβ phase
Li M.-J.、Liu S.、Wang X.-D.、Shi Y.-J.、Pan Q.-L.、Zhang R.-F.、Zhou X.-J.、Birbilis N.
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School of Materials Science and Engineering Zhengzhou University
Manufacturing Center CRRC Times Electric Co. Ltd.
Key Laboratory of Material Physics Ministry of Education School of Physics and Microelectronics Zhengzhou University
School of Materials Science and Engineering Central South University
Hunan Provincial Key Laboratory of Intelligent Manufacturing Technology for High-performance Mechanical Equipment Changsha University of Science and Technology
College of Engineering and Computer Science Australian National University
NSTL
Elsevier
