Pan Y.,Suzhou Non Ferrous Metals Research Institute Co. |
Huang R.,Central South University |
Guo F.,Suzhou Non Ferrous Metals Research Institute Co. |
Ma K.,Suzhou Non Ferrous Metals Research Institute Co. |
And 2 more authors.
Nanjing Hangkong Hangtian Daxue Xuebao/Journal of Nanjing University of Aeronautics and Astronautics | Year: 2012
The evolution of the microstructure and microhardness of a certain kind of Al-Mn alloies during homogenization treatment at 610°C is investigated by scanning electron microscopy, energy depressive spectroscopy and microhardness measurement. The results show that the discontinuous dendrite dissolves adequately after homogenization at 610°C for 4 h. With the increase of annealing time, skelecton-like shaped phase transforms into block-like shape gradually, and the ratio of the transformation from β-Al 6(MnFe) phase to α-Al(MnFe)Si phase also increases. Furthermore, the proper homogenizing process for this Al-Mn alloy is at 610°C for 10 h, which is in agreement with the results from the homogenizing kinetic equation. Under this process, most of the particles in this alloy become smaller and good dispersed phases, and the ratio of α-Al(MnFe)Si phase increases obviously.