内氧化处理铜铬合金的微观组织和性能研究

Microstructure and Properties of Internal Oxidation Treated Cu-Cr Alloy

采用熔炼后的Cu-Cr-Ti合金薄板,通过内氧化+冷轧+时效相结合的工艺,制备出了高导电率的Cr_(2)O_(3)铜基复合材料,并通过金相及扫描等分析手段对其微观组织及性能进行了分析。结果表明:随着内氧化的温度和时间增加,内氧化层逐渐增加,内氧化层的硬度值和导电率分别在84HV和96%IACS左右;通过冷轧+时效的工艺可以进一步提高合金的导电率和强度,其中,内氧化8h后Cu-Cr-Ti合金在经过冷变形和时效处理,导电率达到了86.2%IACS,抗拉强度达到了460 MPa。表明,该工艺制备出的Cu-Cr-Ti合金具有一定的应用前景。

Using the smelted Cu-Cr-Ti alloy sheet,a high-conductivity Cr_(2)O_(3) copper-based composite material was prepared through a combination of internal oxidation+cold rolling+aging,and its microscopic features were analyzed by metallographic and scanning methods.Organization and performance were analyzed.The experimental results show that with the increase of the temperature and time of internal oxidation,the depth of the internal oxide layer gradually increases,and the conductivity and hardness of the internal oxide layer are very high.The hardness and conductivity are about 84 HV and 96% IACS,respectively;The process of rolling+aging can further improve the electrical conductivity and strength of the alloy.Among them,the Cu-Cr-Ti alloy after internal oxidation for 8 h is the highest after cold deformation and aging treatment,the electrical conductivity reaches 86.2% IACS,and the tensile strength reaches 86.2% IACS,up to 460 MPa.It shows that the Cu-Cr-Ti alloy prepared by this process has certain application prospects.