“…Therefore, it is essential to improve the mechanical properties and corrosion resistance of copper tubes to meet the demand. Microalloying can be an effective method to improve the strength and corrosion resistance of copper tubes [5,6] . Rare earth (RE) elements, known as the vitamins of industry, have been widely used as alloying additives to improve the properties of ferrous metals, aluminum alloys, magnesium alloys and copper alloys [7][8][9][10] .…”