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应用电镜及Ｘ射线衍射技术研究了含Ｃｒ及不含Ｃｒ的Ｆｅ－２８ａｔ．－％Ａｌ合金中相变结果表明，１０８０℃淬火过程中，Ｂ２结构热畴已开始形成；缓冷通过Ｂ２相区，沿晶界出现α相；对Ｆｅ－２８Ａｌ－５Ｃｒ合金还出现细小的ＣｒＮ相沉淀，板状合金中Ｂ２→Ｄ０３是一缓慢转变过程．
The Cr-containing and Cr-free Fe-28at were studied by means of electron microscopy and X-ray diffraction. -% Al alloy shows that during the quenching process at 1080 ℃, the thermal domain of B2 structure has begun to form; slow cooling passes through the B2 phase region and α phase appears along the grain boundary; fine CrN also appears in the Fe-28Al-5Cr alloy Phase precipitation, plate alloy B2 → D03 is a slow process of change.