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利用小角Ｘ射线散射技术研究了淬火态Ｆｅ－ Ｎｉ－ Ｃｏ－ Ａｌ－ Ｃｕ－ Ｔｉ 永磁合金在８００ ℃保温不同时间时析出相的尺寸和比表面积的变化．初步分析了固溶淬火过程中形成的析出相的形状．揭示了析出相保温过程中的长大规律．结果表明，析出相的长大规律主要是小粒子溶解，较大棒状粒子是以长轴尖角溶解，长轴缩短，而径向尺寸增加的方式长大，长大过程中长径比减小．广角衍射证实在保温时间较长时，合金中出现新相．
The small-angle X-ray scattering technique was used to study the size and specific surface area of the as-precipitated Fe-Ni-Co-Al-Cu-Ti permanent magnetic alloys at 800 ℃ for different time. The shape of precipitates formed during solution quenching was analyzed preliminarily. Revealed the growth of precipitated phase insulation law. The results show that the growth law of the precipitated phase is mainly the dissolution of small particles. The larger rod-shaped particles are dissolved by long-axis sharp corners, shortened in the long axis and increased in radial size, and the aspect ratio decreases . The wide-angle diffraction confirmed that a new phase appeared in the alloy when the holding time was longer.