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通过对未加Ｔｉ及加有不同量Ｔｉ的Ｆｅ－３６．５Ａｌ（原子分数，％）基合金的高温变形行为的研究，发现加Ｔｉ的合金在９００—１０００℃，初始应变速率为２．０８×１０￣（－４）－８．３３×１０￣（－２）ｓ￣（－１）范围内比未加Ｔｉ的ＦｅＡｌ合金的延伸率有较大幅度提高，且应变速率敏感性指数ｍ值普遍超过０．３。随含Ｔｉ量的增加，ｍ值及延伸率也普遍提高，最高值分别达到０．４３和２９７％．金相及ＴＥＭ分析表明，变形过程中出现了明显的晶粒细化及亚晶形成过程，并由此导致了大晶粒含钛ＦｅＡｌ基合金的超塑性。
Based on the study of the high temperature deformation behavior of Fe-36.5Al (atomic fraction,%) based alloys without addition of Ti and with different amounts of Ti, it was found that the initial strain rate of the Ti-added alloys at 900-1000 ℃ and the initial strain rate of 2.08 × 10 ~ (-4) -8.33 × 10 ~ (-2) s ~ (-1), the elongation of FeAl alloy without Ti significantly increased, and the strain rate sensitivity index m Generally more than 0.3. With the increase of Ti content, the values of m and elongation also generally increased, with the highest values of 0.43 and 297% respectively. Metallographic and TEM analyzes show that there are obvious grain refinement and subgrain formation in the deformation process, which leads to the superplasticity of the large grain FeAl-based alloy.