The changes in the microstructures and D0₃↔ B2 transition temperature were investigated for Fe-30at.%Al-5at.%Cr alloy with the ordered D0₃structure when Ti, Hf and Zr were added respectively. The addition of Cr has no effect on the microstructure. However, as the amount of Ti addition increased, the grain size became smaller. Addition of Ti＋Hf, Ti＋Zr and Ti＋Hf＋Zr also showed the similar effect. When 20at.% of Ti was added, the second phase precipitates on the substrate. The addition of Cr, Hf and Zr alone has no effect on D0₃↔ B2 transition temperature. However, as the amount of Ti addition increased by 5, 10, 15 and 20at.%, the transition temperatures showed 929, 930, 960 and 930℃ respectively.