利用X射线衍射仪、差示扫描量热仪和高分辨电镜对Cu_60Zr_20Ti_20块体金属玻璃在低温轧制过程中的结构变化进行了研究.结果表明,应变速率对Cu_60Zr_20Ti_20金属玻璃塑性变形过程中相变产物具有决定性的影响.随着应变速率从1.0×10~(-4)增大到5.0×10~(-1)s~(-1),大塑性变形后的Cu_60Zr_20Ti_20金属玻璃从不发生相变到产生相分离、再到同时发生相分离和纳米晶化转变,发生相变的临界应变量则不断减小. The structure of Cu_60Zr_20Ti_20 bulk metallic glass during low temperature rolling was investigated by X-ray diffraction, differential scanning calorimetry and high-resolution electron microscopy.The results show that the strain rate changes the phase transformation during the plastic deformation of Cu60Zr20Ti20 glass, The product has a decisive influence.With the strain rate increasing from 1.0 × 10 -4 to 5.0 × 10 -1 s -1, the phase transition of the Cu 60Zr 20Ti 20 glass with no plastic deformation occurred To produce phase separation, and then to the occurrence of phase separation and nanocrystallization transformation, the critical strain of the phase transition is decreasing.