Abstract
In this paper results on the microstructures and mechanical properties of Fe 3Al-based Fe–Al–C alloys with strengthening precipitates of the perovskite-type κ-phase Fe 3AlC x are presented. The alloys are prepared by vacuum induction melting and cast into Cu-moulds. The composition of the Fe 3Al matrix of the investigated Fe–Al–C alloys varies between 23 and 29 at.% Al. The ternary C-additions range from 1 to 3 at.%. The microstructures of the alloys are characterised by means of light optical microscopy (LOM). Phase identification is performed by means of X-ray diffraction (XRD). The strength of the alloys as a function of temperature is determined through compression tests. The room-temperature ductility is evaluated by tensile tests. The fracture surfaces of the tensile specimens are analysed using scanning electron microscopy (SEM).
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