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用Ｍｏｓｓｂａｕｅｒ谱研究了Ｂ２结构金属间化合物Ｆｅ－４０Ａｌ及其加Ｍｎ或Ｔｉ量分别为１，５，１０ａｔ．－％的合金．在室温下，Ｆｅ－４０Ａｌ及其合金的Ｍｏｓｓｂａｕｅｒ谱均接近单峰谱线，Ｆｅ原子无明显磁矩对加入第三组元的Ｆｅ—４０Ａｌ合金的Ｍｏｓｓｂａｕｅｒ谱用最小二乘法拟合为两条洛仑兹曲线之和，认为Ｍｎ原子既占据Ｆｅ原子位置，也占据Ａｌ原子位置；而Ｔｉ原子优先占据Ｆｅ原子位置，超过５ａｔ．－％时，才有少量Ｔｉ原子占据Ａｌ原子位置．
The Mossbauer spectrum was used to study the structure of Fe-40Al intermetallic compound B2 and its addition amount of Mn or Ti were 1,5,10at. -% of the alloy. At room temperature, the Mossbauer spectra of Fe-40Al and its alloys are close to the single peak line, and the Fe atoms have no obvious magnetic moments. The Mossbauer spectra of the Fe-40Al alloy with the third element are fitted by two least squares Lorenz curve that Mn atoms occupy both the position of the Fe atoms, but also occupy the position of Al atoms; and Ti atoms preferentially occupy the position of Fe atoms, more than 5at. -%, only a small amount of Ti atoms occupy Al atoms.