Iron-based alloys with high-carbide (Fe3AlC0.5) volume fractions (up to 40%) may be obtained by careful aluminum and carbon additions. These need to be hot worked to obtain a uniform distribution of the carbide. The workability of two alloy compositions (Fe-11 wt.% Al with 0.5 wt.% C and 1.1 wt.% C) was investigated using a strain-induced crack opening (SICO) test in a Gleeble 3800 thermomechanical simulator. SICO tests were conducted in the temperature range of 1,073-1,373 K at strain rates of 0.05-0.1 s-1. Both alloys exhibited good workability with no tendency for cracking despite their high aluminum and carbon contents. However, refinement of microstructure due to thermomechanical processing could only be observed at 1,373 K for both alloys. At lower temperatures, a slightly aligned and elongated structure was observed. It is proposed that the higher solubility of carbon with an increase in temperature as well as the transformation of matrix from ferrite to austenite may play an important role in determining the optimum working temperature for these alloys.