利用差示扫描量热法研究了铸态和退火态Zr65Al7.5Ni10Cu17.5金属玻璃在冷轧过程中的自由体积演化.随着塑性变形的进行,自由体积含量先增加,然后于临界应变之上达到饱和,在此过程中材料则始终维持在完全非晶状态.金属玻璃的初始自由体积含量少,变形过程中自由体积增加的速度大,因此不同初始状态的金属玻璃在大塑性变形后自由体积含量彼此接近.剪切带中的自由体积聚合形成纳米孔洞是自由体积在大应变下达到饱和的原因. The free volume evolution of as-cast and annealed Zr65Al7.5Ni10Cu17.5 metallic glass during cold-rolling was studied by differential scanning calorimetry. As the plastic deformation proceeds, the free volume content first increases, and then above the critical strain Reached saturation, the material in this process is always maintained in a completely amorphous state.Metallic glass initial free volume content is small, the deformation of the free volume increases rapidly, so different initial state of the metal glass in the plastic deformation after the free volume The contents are close to each other.The free volume in the shear band polymerizes to form nanopores which is responsible for the saturation of the free volume under large strain.