半连续铸造4032合金组织和硬度分析  

Microstructure and Hardness of Large Semi-continuous 4032 Cast Alloy Ingot

作　　者：王玉凤[1] 王国军[2] 刘科研[2] 林森[2] 宁志良[1] 

机构地区：[1]哈尔滨工业大学,黑龙江哈尔滨150001 [2]东北轻合金有限责任公司,黑龙江哈尔滨150060

出　　处：《铸造设备与工艺》2011年第1期7-10,共4页Foundry Equipment & Technology

基　　金：哈尔滨科技创新专项基金(2010RFJGG006)

摘　　要：以半连续铸造大型4032合金铸锭为研究对象,观察了铸锭金相组织,统计分析了α-Al二次枝晶臂间距(SDAS),结合Procast温度场模拟,确定了4032合金铸锭α-Al枝晶二次枝晶臂间距与局部凝固时间呈幂函数关系,与硬度呈指数函数关系,并确定了相应的指数和系数。The microstructures of large semi-continuous casting 4032 alloy ingot were investigated in this study by optical microscope and graphical analysis software as well as temperature field distribution simulation by Procast 2008.The relationship between the secondary dendrite arm spacing of α-Al and the solidification time accords with power function,between the hardness and the secondary dendrite arm spacing of α-Al exponential function.The relative exponent and coefficient were determined.

关 键 词：4032铝合金 凝固时间 二次枝晶臂间距 硬度 

分 类 号：TG249.7[金属学及工艺—铸造]