Effect of hot pressure on microstructure and mechanical properties of bulk nanocrystalline Fe3Al with Mn element

The bulk nanocrystalline Fe3Al materials with 10wt% Mn element made by alumino-thermic reaction were hot pressed at different pressure under 800℃,1000℃.Grain size of the materials was investigated by XRD.Hardness and compressibility were also measured.The results show that the grain size does not change and the hardness increases after hot pressing.Effects of hot pressing temperature and pressure on hardness are little.The material possesses good plasticity.Its compressibility increases with pressure,but changes little when temperature varies.