Neutron radiography using monochromatic neutron radiation makes it possible to visualize the diffraction contrast between different phases in a polycrystalline material due to the difference in the attenuation of the neutron beam intensity in these phases due to coherent neutron scattering. Although this method has already proven itself in studies of the phase distribution in steels, the literature only provides information on phases that differ greatly in structure, such as ferrite and austenite, austenite and martensite, or austenite and bainite. In this work, the possibilities of the method for visualizing the diffraction contrast between the ferrite and martensitic phases of steel with the same chemical composition and similar crystal structures were investigated.

使用单色中子辐射的中子射线照相术使得可视化多晶材料中不同相之间的衍射对比度成为可能，这是由于相干中子散射引起的在这些相中中子束强度衰减的差异。尽管这种方法已经在钢中的相分布研究中得到了证明，但文献仅提供了结构上相差很大的相的信息，例如铁素体和奥氏体，奥氏体和马氏体或奥氏体和贝氏体。在这项工作中，研究了可视化具有相同化学组成和相似晶体结构的钢的铁素体和马氏体相之间的衍射对比度的方法的可能性。