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调幅组织(modulated structure)可以通过调幅分解(spinodal Decomposition)而产生,使合金获得成分不同的呈周期规则排列的两相结构;它也可通过形核-长大机制,即在长大(或粗化)过程中由于各向异性的共格应变能的作用,形成有取向的规则排列的两相组织。因此相分解的两种机制:调幅分解和形核-长大,在相变后期都可获得几乎相同的调幅组织,难以区分。有人认为电子衍射中出现卫星反射(Satellite)(或X衍射中出现边带)和TEM
The modulated structure can be created by spinodal decomposition, which allows the alloy to obtain two-phase structures of different composition in periodic regular arrangement; it can also be formed by a nucleation-growth mechanism, Due to the effect of the coherent strain energy of anisotropy, two-phase structures with regular orientation are formed. Therefore, the two mechanisms of phase decomposition: AM decomposition and nucleation - growing up in the late phase can be obtained almost the same amplitude modulation organization, it is difficult to distinguish. Some people think that there are satellite diffraction in electron diffraction (Satellite) (or X diffraction in the sideband) and TEM