| Abstract: | Rapidly solidified Al-8Fe-4Ce alloy was prepared by melt spinning.As-quenched and as-annealed microstructures were studied by TEM and energy dispersive spectrum analysis.The microhardness of the alloy at different annealing temperature was measured.The results obtained indicated that as-quenched microstructure varied with different cooling rates.The microstructure annealed at 300℃ was much the same as that of the as-quenched.The dispersed phases at grain boundary of the microstructure annealed at 400℃ became coarsening.After annealing at 450℃ for 2 hours,the primary phase and the intercellular dispersed phases,metastable phase Al6Fe and Al20Fe5Ce respectively,coarsened further.The soften temperature was deduced at over 300℃ by measuring microhardness. |
