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利用电阻测量、Ｘ射线衍射等方法研究了铁锰基形状记忆合会中γ→ε相变与顺磁—反铁磁转变（ＰＭ－ＡＭ）．对顺磁—反铁磁转变的温度区间和可逆性作了仔细分析。降温时γ→ε转变与顺磁到反铁磁转变的温度区间有重叠，但升温时反铁磁到顺磁的转变出现在－１４０℃到＋５０℃之间，ε→γ在１００～２００℃之间进行，二者截然分开，淬火态合会Ｘ射线谱上的奥氏体线条强于马氏体线条，即奥氏体是主相。结果还表明磁转变表现为降温时电阻由下降转为升高。Ｎｅｅｌ转变点由升温曲线上的最低点给出，其值为－５℃。讨论了Ｓｉ对磁转变影响的可能原因。
The γ → ε phase transformation and paramagnetic-antiferromagnetic transition (PM-AM) in Fe-Mn-based shape memory alloys were investigated by means of resistance measurement and X-ray diffraction. The temperature range and reversibility of the paramagnetic-antiferromagnetic transition were carefully analyzed. The transition from γ → ε to the temperature range from paramagnetism to antiferromagnetic transitions at the time of cooling overlap, but the transition from antiferromagnetic to paramagnetic occurs at -140 ℃ to +50 ℃ and ε → γ at 100-200 ℃ Between the two completely separate quenching state X-ray spectrum of austenite lines stronger than the martensite lines, that austenite is the main phase. The results also show that the magnetic transitions show a decrease in resistance as the temperature decreases from elevated to elevated. The Neel transition point is given by the lowest point on the temperature rise curve and is -5 ° C. The possible reasons for the influence of Si on magnetic transition are discussed.