采用过冷液体等温处理的方法制备出直径为3 mm的Cu45Zr42Al8Ag5合金圆棒,研究了过冷液体等温处理对铜基内生复合材料的热稳定性和力学性能的影响,研究表明,过冷处理后的试样均为原位自生晶体/非晶复合材料,且具有较好的热稳定性。由铜基非晶合金压缩后的应力-应变曲线可以看出,随保温时间的延长,最大抗压强度逐渐降低,最大为2266 MPa;而塑性变形量逐渐增大,最大为1.46%,相比于过热处理的试样,过冷处理的试样的力学性能比较好。断口微观形貌分析表明,吸铸温度为1090 K保温时间为6 min的试样断口呈现明显的脉络状纹络,使得铜基非晶具有较大的抗压断裂强度和较好的塑性。 Cu45Zr42Al8Ag5 alloy rods with a diameter of 3 mm were prepared by the supercooled liquid isothermal treatment. The effects of subcooled liquid isothermal treatment on the thermal stability and mechanical properties of copper-based composites were investigated. The results show that after undercooling Of the samples are in situ crystal / amorphous composite material, and has good thermal stability. From the stress-strain curves of the copper-based amorphous alloy, it can be seen that the maximum compressive strength gradually decreases with the increase of holding time, up to 2266 MPa, while the plastic deformation gradually increases up to 1.46% In the overheated sample, the mechanical properties of the sample undercooling is better. The fracture surface microstructure analysis showed that the fracture surface of specimen with a casting temperature of 1090 K and a holding time of 6 min showed obvious vein-like pattern, which made the copper-based amorphous alloy have greater compressive strength and good plasticity.