Fe-Mn-Ti合金在冷加工后于540℃左右高温回火可以得到较高的磁矫顽力。本研究用退磁曲线测量；磁转矩法测定磁织构随回火温度的变化；在100℃～600℃之间回火时测定高温矫顽力随时间的变化，并分加外磁场和不加外磁场两种情况，分析磁退火效应。从多样性试验结果出发，分析讨论后得到Fe-Mn-Ti合金的高矫顽力的产生可能主要是单畴机理。
The cold worked Fe-Mn-Ti alloy after tempering at～540℃ can get relatively high value of coercive force. Using demagnetizing curve measurement, the relationship between magnetic texture and tempering temperature, high temperature coercive force variation with time at 100～600℃, magnetic annealing influence on coercive force, and the mechanism of magnetic hardening was studied. From analyzing various experimental results, the suggestion of singledomain magnetie hardening mechanism in Fe-Mn-Ti alloy was given.
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