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对Ｆｅ－２７Ｍｎ－６Ｓｉ－５Ｃｒ（％，质量分数）形状记忆合金热拉丝经不同温度退火，观察其显微组织．发现７００°Ｃ时再结晶刚结束，此时晶粒最细小；低于７００°Ｃ退火，试样内存在变形晶粒；８００°Ｃ退火再结晶，呈现晶粒粗大．采用膨胀法和四端电阻法研究退火温度对试样热诱发ε－马氏体Ｍｓ的影响．Ｍｓ随退火温度的升高而升高，到７００°Ｃ达到最高，８００°Ｃ以上Ｍｓ复又降低，这可能与７００°Ｃ退火后变形结构的消除、再结晶晶粒十分细小和层错单一取向形成有关．
The hot drawing of Fe-27Mn-6Si-5Cr (%, mass fraction) shape memory alloy was annealed at different temperatures and the microstructure was observed. Found 700 ° C recrystallization just ended, this time the smallest grain; less than 700 ° C annealing, the sample exists in the deformed grains; 800 ° C annealing recrystallization, showing coarse grains. The effect of annealing temperature on the heat-induced ε-martensite Ms was investigated by means of expansion method and four-terminal resistance method. Ms increases with the increase of annealing temperature, reaches the highest at 700 ° C, and Ms complex decreases more than 800 ° C, which may be due to the elimination of deformation structure after annealing at 700 ° C, the recrystallization grains are very fine and the faults are single Orientation related formation.