Abstract
The pure Fe and pure Al (25 mol%) powder mixture was mechanically alloyed for various times by a dry tumbler ball-milling. The magnetic property of the milled powder was measured by a vibrating sample magnetometer (VSM) and a 57Fe Mössbauer spectroscopy. The powder milled for an enough long time, 1800ks, had a broad Mossbauer spectrum. It was predicted that the fully milled powder was composed with both ordered and disordered Fe3Al phases. The VSM measurements showed that the saturation magnetization (Ms) of the milled powder was decreased with the milling time until 360 ks due to the solid solution of Al into α-Fe. However, after 360 ks, the Ms was contrary increased with straining by the milling. The Ms of the powder milled for 1800ks decreased by annealing.
