Method for evaluating homogenization effect of 6xxx series aluminum alloy cast ingot

• Main Authors: LI YANAN, LI XIWU, WEN KAI, LI ZHIHUI, GAO GUANJUN, ZHANG YONG'AN, LIU HONGWEI, XIONG BAIQING, YAN HONGWEI, YU MINGYANG, YAN LIZHEN, XIAO WEI, LI YING, ZHU KAI, SHI GUOHUI
• Format: Patent
• Language: Chinese; English
• Published: 30.04.2024
• Subjects: ALLOYS; CALCULATING; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; COMPUTING; COUNTING; FERROUS OR NON-FERROUS ALLOYS; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; METALLURGY; PHYSICS; TESTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a method for evaluating the homogenization effect of a 6xxx series aluminum alloy cast ingot. The method comprises the following steps: (1) cutting a cross section slice from a 6xxx series aluminum alloy ingot subjected to homogenization heat treatment, and cutting a sample at a characteristic position on the slice; (2) the sample is subjected to short-time redissolution treatment, the treatment system is that heat preservation treatment is conducted for 1-40 min at the temperature of 490-540 DEG C, and water quenching cooling is conducted at the room temperature; (3) preparing the sample subjected to short-time redissolution treatment into a metallographic sample; (4) taking a picture under a metallographic microscope; and (5) evaluating the homogenization effect of the cast ingot according to the statistical calculation result of the residual low-melting-point second phase in the shot picture. By means of the method, the low-melting-point eutectic phase and the insoluble phase in the