Super-heat-resistant high-conductivity aluminum alloy conductor and preparation method thereof

• Main Authors: GAN CHUNLEI, WANG SHUNCHENG, ZHONG FANGHUA, WANG ZHEN, NIU YANPING
• Format: Patent
• Language: Chinese; English
• Published: 18.04.2023
• Subjects: ALLOYS; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a super-heat-resistant high-conductivity aluminum alloy conductor and a preparation method thereof. The aluminum alloy conductor is composed of, by mass, 0.15%-0.2% of Zr, 0.05%-0.1% of Cu, 0.08%-0.12% of RE, 0.1%-0.15% of Si, smaller than or equal to 0.2% of Fe and the balance Al and inevitable impurities, and RE is mixed rare earth with La and Ce as main components. The preparation method sequentially comprises the steps of melting an aluminum ingot, preparing molten aluminum alloy, blowing and refining in a furnace, degassing and filtering outside the furnace, continuously casting the molten aluminum alloy, performing induction heating on a continuous casting blank, continuously rolling to form an aluminum alloy round rod, and drawing to form the aluminum alloy conductor. The mixed rare earth is added to promote precipitation and stabilization of heat-resistant phase Al3Zr particles, the Fe-rich phase is refined and dispersed and distributed on the grain boundary, the heat resistanc