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X 射线衍射结果表明, Ni50Mn19Fe6Ga25 合金甩带样品在室温是 L21 结构,并且存在[100]织构. [100]轴垂直于试样表面, 而[110]轴与带向成 45 度角, 并且在带向与带的法线方向确定的平面内. 应力测试表明沿带向存在拉应力, 对应择尤取向的晶粒拉应力的方向就是沿[010]方向. 原位X射线衍射变温分析表明, 未退火的样品降温时没有发生明显的马氏体转变, 而经900 K, 24 h去应力退火后的样品, 再降温时发生明显的由立方到四方的结构转变. 这表明沿[010]方向的拉应力阻止了马氏体转变.
The X-ray diffraction results show that the Ni50Mn19Fe6Ga25 alloy strip has a L21 structure at room temperature and has a texture of [100]. [100] The axis is perpendicular to the surface of the sample and the [110] axis is at a 45- Band direction and the normal direction of the band.The stress tests show that the tensile stress along the belt direction, corresponding to the direction of the grain tensile stress along the direction of [010] is the direction of in situ X-ray diffraction temperature analysis shows that, No obvious martensite transformation took place in the unannealed samples, while the samples annealed at 900 K and 24 h de-stressed significantly and the structure changed from cubic to tetragonal structure after cooling, which showed that along the [010] direction The tensile stress prevents the martensitic transformation.