Heat-treatment-free aluminum alloy based on scrap aluminum as well as preparation method and application of heat-treatment-free aluminum alloy

• Main Authors: ZHU WENFENG, WANG PENGHAO, XING HUIMING, XIONG JINGPENG, WANG YU, LIU YONG, LIN TAO
• Format: Patent
• Language: Chinese; English
• Published: 31.05.2024
• Subjects: ALLOYS; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides a heat treatment-free aluminum alloy based on scrap aluminum and a preparation method and application thereof, and relates to the technical field of metal materials. The heat treatment-free aluminum alloy provided by the invention is prepared from the following components in percentage by weight: 9 to 12 percent of Si, 0.65 to 0.75 percent of Fe, 0.3 to 0.5 percent of Cu, 0.1 to 0.5 percent of Mg, 0.2 to 0.5 percent of RE, 0.05 to 0.15 percent of Cr, 0.02 to 0.04 percent of Sr and the balance of Al and inevitable impurity elements. The mass fraction of the impurity element is less than 0.3 wt.%, the source of Al comprises scrap aluminum, and the RE comprises at least one of La, Ce and Y. The recycled scrap aluminum alloy is used for remelting, refining and modification, and then high-pressure die casting is carried out to prepare the heat-treatment-free regenerated aluminum alloy, so that the energy consumption and the duration of the automobile die casting in the production process can