Characterization of rapidly solidified Al-Mg-Sc alloys with Li addition

This paper investigate the thermophysical properties of liquid as well rapid solidification Al5.0Mg0.2Sc alloys with 3.0 and 6.0 Li wt% by discharge crucible, Impulse Atomization techniques respectively. The crucible method, allowed a simultaneous determination density, surface tension viscosity function temperature. While density are found to decrease content, increases due short-range ordering occurring in intermetallic phases. In order determine their characteristic temperatures, powder generated were investigated using Differential Scanning Calorimeter, while microstructural observations chemical analyses conducted scanning transmission electron microscopy energy dispersive X-ray spectroscopy. To study influence on phase formation these alloys, diffraction patterns microscopy, synchrotron measurements carried out. microstructure revealed precipitations Al3Sc Al2MgLi phases both alloy compositions. addition, AlLi precipitates observed Al5.0Mg0.2Sc6.0Li alloy, which is agreement diagram.