Title of article :
Effects of Sc on microstructure and low-cycle fatigue properties of Al–Li alloy
Author/Authors :
Wang، نويسنده , , Mingxing and Liu، نويسنده , , Zhongxia and Liu، نويسنده , , ZhiYong and Yang، نويسنده , , Sheng-Feng Weng، نويسنده , , Yonggang and Song، نويسنده , , Tianfu، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Abstract :
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 δ′ (Al3Li) particles, and promotes the precipitation of the S′ (Al2CuMg) phase. In addition, new strengthening phases, such as Al3Sc, Al3Li/Al3Sc and Al3Li/Al3(Sc,Zr), also precipitate in Al–Li alloy with Sc addition, which is the main reason for the improvement of the low-cycle fatigue properties of Al–Li–Sc alloy.
Keywords :
low-cycle fatigue , sc , Al–Li alloy , microstructure
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
