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Effects of Sc on microstructure and low-cycle fatigue properties of Al–Li alloy

✍ Scribed by Mingxing Wang; Zhongxia Liu; Zhiyong Liu; Sheng Yang; Yonggang Weng; Tianfu Song

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
634 KB
Volume
483-484
Category
Article
ISSN
0921-5093

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✦ Synopsis

The microstructures and low-cycle fatigue properties of Al-Li alloys with and without Sc addition were investigated. The results showed that the addition of Sc in Al-Li alloy can change its microstructure conspicuously, and improve its low-cycle fatigue properties. Sc addition to Al-Li alloy decreases the growth rate of ␦ (Al 3 Li) particles, and promotes the precipitation of the S (Al 2 CuMg) phase. In addition, new strengthening phases, such as Al

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