Gradual solution heat treatment of AlSiCuMg cast alloys
来源期刊：Rare Metals2003年第4期
论文作者：WANG Guiqing , BIAN Xiufang ,and ZHANG Junyan) The Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan , China) Department of Material Science and Technology, Shandong Architectural Engineering Institute, Jinan , China
文章页码：304 - 308
摘 要：<正> The microstructure characteristics of AlSiCuMg cast alloys were studied with different Cu content and the grad-ual solution treatment by DSC, SEM, TEM and mechanical method. The melting point of α（Al） + Si decreases and poly-nary eutectic phases with low melting point form with increase of Cu content. Gradual solution treatment includes two steps: solution treating near the melting point of polynary eutectic phase to take it dissolve first, and then increasing solution tem-perature to take the remainder copper intermetallics dissolved into α（Al）. Grain boundaries melting can be avoided by gradual solution treatment, even the maximum solution temperature is above final solidification point, and the age harden-ing response increases correspondingly.
WANG Guiqing , BIAN Xiufang ,and ZHANG Junyan1) The Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061, China2) Department of Material Science and Technology, Shandong Architectural Engineering Institute, Jinan 250014, China
摘 要：<正> The microstructure characteristics of AlSiCuMg cast alloys were studied with different Cu content and the grad-ual solution treatment by DSC, SEM, TEM and mechanical method. The melting point of α（Al） + Si decreases and poly-nary eutectic phases with low melting point form with increase of Cu content. Gradual solution treatment includes two steps: solution treating near the melting point of polynary eutectic phase to take it dissolve first, and then increasing solution tem-perature to take the remainder copper intermetallics dissolved into α（Al）. Grain boundaries melting can be avoided by gradual solution treatment, even the maximum solution temperature is above final solidification point, and the age harden-ing response increases correspondingly.
关键词：
