CAJ | 학술논문

采用扫描电镜、透射电镜、万能电子试验机、数字式微欧计等分析手段，悁究了不同冷轧变形量和热处理工艺对高强高导Cu-Cr-Zr-Ag合金显微组织与性能的影响。结果表明，合金冷轧后，其显微组织中出现大量的位错和胞状结构，经500℃/1 h时效处理，合金基体中随机析出了弥散的第二相。随着冷轧变形量逐渐增大，合金抗拉强度不断升高，最高值可达632 MPa，而延伸率略有降低。时效态合金的断口形貌呈现出大量的韧窝，其断裂方式为微孔缩聚型塑性断裂。
채용소묘전경、투사전경、만능전자시험궤、수자식미구계등분석수단，연구료불동랭알변형량화열처리공예대고강고도Cu-Cr-Zr-Ag합금현미조직여성능적영향。결과표명，합금랭알후，기현미조직중출현대량적위착화포상결구，경500℃/1 h시효처리，합금기체중수궤석출료미산적제이상。수착랭알변형량축점증대，합금항랍강도불단승고，최고치가체632 MPa，이연신솔략유강저。시효태합금적단구형모정현출대량적인와，기단렬방식위미공축취형소성단렬。
The influences of cold working and heat treatment on microstructures and properties of Cu-Cr-Zr-Ag alloy with high strength and high conductivity were studied by SEM, TEM, electronic universal testing machine and digital micro-ohm meter. Experimental results show that, after cold rolling, a large number of dislocations and cell structures appear in the microstructure of the alloy. The second phase precipitates are randomly dispersed in the matrix, when the alloy is aged at 500℃ for 1 hour. The tensile strength increases with the increase of cold rolling, and the highest tensile strength value is 632 MPa, while the elongation drops a little. The fracture surface of the aged alloy exhibits a large number of dimples and the fracture mode of the alloy is micro-porous condensation plastic fracture.