机械表面处理铜合金研究现状

铜合金具有良好的导电性和导热性，进一步提升铜合金力学性能可扩展其应用领域。通过机械表面处理在铜合金内构筑梯度纳米晶结构能在无合金元素添加的条件下，大幅提升铜合金强度-塑性匹配、抗疲劳等性能，具有工程应用潜力。本文首先综述了国内外制备梯度纳米晶结构铜合金常用的机械表面处理技术；其次，分析了机械表面处理对铜合金强度-塑性匹配性、疲劳性能和耐腐蚀性能的影响，并系统阐述了梯度纳米晶结构铜合金组织稳定性的调控方法；最后，总结了机械表面处理铜合金研究领域的发展趋势及面临的挑战。

Mechanical Surface Treatment of Cu Alloy

Copper (Cu) alloys have good electric conductivity and thermal conductivity, enhancing their mechanical properties could expand its application. The construction of gradient nano grained structure in Cu alloys by using mechanical surface treatment can significantly improve the strength-ductility synergy and fatigue performance, without alloying elements addition, which has received widespread attention. This article reviews the commonly used mechanical surface treatment techniques for preparing gradient nano grained Cu alloys. Secondly, the effects of mechanical surface treatment on the strength-ductility synergy, fatigue performance, and corrosion resistance of Cu alloys were summarized, as well as the methods for enhancing the thermal stability of microstructure. Finally, the development trends and challenges in the field of Cu alloy treated by mechanical surface treatment were summarized.