用急冷法制取５％ＡｌＺｎ０１％ＲＥ合金薄带，通过Ｘ射线衍射、差式量热扫描和高分辨透射电子显微镜观察表明，这种合金薄带为纳米晶粒弥散的非晶合金。对不同冷却速度得到的合金薄带进行观察比较，发现冷却速度越快得到的合金晶粒越粗，非晶合金的稳定性越差，在低冷却速度下反而容易获得室温下稳定的纳米晶粒弥散的非晶合金，而且晶粒细化。对这种现象进行了解释 The 5% AlZn01% RE alloy ribbons were prepared by quenching method. The X-ray diffraction, differential scanning calorimetry and high-resolution transmission electron microscopy showed that the alloy ribbons were nanocrystalline dispersion Crystal alloy. The cooling rate of the alloy strip was observed and compared and found that the faster the cooling rate obtained alloy grains thicker, the worse the stability of the amorphous alloy, but at low cooling rate but easy to get at room temperature and stable nano-crystalline grain Dispersed amorphous alloy, and grain refinement. This phenomenon is explained