关于Daniel—Lipson调幅波长公式的适用性问题

APPLICABILITY ON THE DANIEL-LIPSON'S WAVELENGTH FORMULA OF SPINODAL DECOMPOSITION

通过对大量合金Ｘ射线衍射谱的分析，并考虑到高、低角度边带位置与强度随时效时间逐渐变化的特点，采用峰分离技术求得两边带（卫星峰）的积分强度．进一步引入边带强度权重因子后，对 Ｃｕ－４Ｔｉ（质量分数，％）合金由 Ｄａｎｉｅｌ－Ｌｉｐｓｏｎ公式计算的调幅波长与电镜衍射波纹图测量结果一致吻合。

Through analyzing the X-ray diffraction peak profiles for a large number of alloys and considering the characteristics of the intensity and position's variation for high and low angle sidebands as the aging progresses, the integrated intensities of two sidebands are calculated by a technique of the peak separation. Furthermore, after introducing the weigth factor of sidebands, the above motioned method of calculating sidebands' intensity avoids the complicated explication in the effects of strain on the asymmetry of the diffraction pattern as well as makes the wavelength calculated by the DanielLipson formula quite correspond with the measured results from the basket weave structure (or wavy contrast), which shows that the Daniel-Lipson formula can be applicable to the whole process of spinodal decomposition and later coarsing.