研究了Zr_(65)Cu_(17.5)Ni_(10)Al_(7.5)块体非晶合金制备过程中合金熔体的冷却速率对合金室温塑性变形能力的影响.对φ2mm铸态Zr_(65)Cu_(17.5)Ni_(10)Al_(7.5)非晶合金及由φ3mm和φ4mm铸态非晶合金经车削加工获得的φ2mm试样的室温压缩变形行为进行了研究,结果表明这些合金表现出不同的塑性变形能力.压缩塑性应变随着铸态块体非晶合金直径的增大而减小,即随冷却速率的增大而增大.由此可知,快速凝固过程中冷却速率的大小决定了块体非晶合金中自由体积含量的多少,对非晶合金的塑性变形能力具有重要影响. The effects of the cooling rate of the alloy melt on the room temperature plastic deformation capacity of the as-prepared Zr_ (65) Cu_ (17.5) Ni_ (10) Al_ (7.5) bulk amorphous alloy were investigated. (17.5) Ni_ (10) Al_ (7.5) amorphous alloys and φ2mm specimens obtained by turning machining of φ3mm and φ4mm as-cast amorphous alloys were studied. The results show that these alloys exhibit different plasticity Deformation capacity.The compressive plastic strain decreases with the increase of the diameter of the as-cast bulk amorphous alloy, that is, increases with the increase of the cooling rate.Thus, the cooling rate in the rapid solidification process determines the size of the bulk Amorphous alloys in the free volume content of the amount of amorphous alloy plastic deformation capacity has an important impact.