Abstract: Experiments were conducted to explore the high temperature resistant aluminium alloy Al Fe MRE.The problems studied include powder preparation and properties, heat forming of the powder alloy, relationship between its microstructure and properties, etc. Ar and He gas atomization processes were used to prepare the powder. It was found that the morphology is spherical and the smaller the particle size, the finer the microstructure. The cooling rate of powder particles increases with the decrease in particle size, and the He atomized gas provides a cooling rate 4~8 times as high as the Ar one. The resultant Al 8Fe MRE is of high mechanical properties both at room temperature and at elevated temperatures.

Key words: solidfication, heat resistant alloys, aluminium alloys, rare earth elements