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研究了Ｆｅ－３０Ｎｉ合金冷轧板由马氏体到奥氏体（α－γ_ｒ）逆相变过程中的织构变化．原始材料的组织状态为形变马氏体、淬火马氏体及残余奥氏体．经过在不同温度加热后，利用Ｘ射线衍射精确测量了马氏体及奥氏体的取向密度分布函数（ＯｒｉｅｎｔａｔｉｏｎＤｉｓｔｒｉｂｕｔｉｏｎＦｕｎｃｔｉｏｎ简称ＯＤＦ）．结果表明，逆相变过程中奥氏体的织构变化可分为两个阶段：低温区，奥氏体织构逆变为原冷轧奥氏体织构，相变的进行可解释为具有强烈取向选择的剪切机制；高温区，相变的进行为定向长大机制，逆变奥氏体织构与冷轧奥氏体织构之间出现偏差，｛２１１｝〈１１１〉织构成分比原冷轧织构强度变弱．由ＯＤＦ差得到两温度区间的相变停止温度，此温度与取向有关，并可假设为相变机制变化温度．相变停止温度越高的取向，以定向长大机制进行的相变开始得越晚．
The textural changes during the reverse transformation of martensite to austenite (α-γ_r) in cold-rolled Fe-30Ni alloy sheets were investigated. The organization of the original material is deformed martensite, quenched martensite and retained austenite. After heating at different temperatures, the orientation distribution function (OrientationDistributionFunction, ODF) of martensite and austenite was precisely measured by X-ray diffraction. The results show that the texture change of austenite in the process of reverse phase transformation can be divided into two stages: the low temperature region, the austenite texture inversion is the original cold-rolled austenite texture, and the phase transformation can be interpreted as having In the high temperature region, the phase transformation takes place as orientation and growth mechanism, and there is a deviation between the inverted austenite texture and the cold-rolled austenite texture. The {211} <111> texture component Weaker than the original cold-rolled texture. From the ODF difference, the temperature at which the phase transition stops is obtained for two temperature intervals, which is related to the orientation and can be assumed to be the temperature at which the phase change mechanism changes. The later the phase change stops the higher the temperature, the later the phase change begins with the orientation growth mechanism.