7175铝合金铸锭均匀化工艺研究  

Study on Homogenization Process of 7175 Aluminum Alloy Ingot

作　　者：张宇 刘欢 吴楠 王克 冯艳飞 Zhang Yu;Liu Huan;Wu Nan;Wang Ke;Feng Yanfei(Liaoning Zhongwang Group Co.,Ltd.,Liaoyang 111003,China)

机构地区：[1]辽宁忠旺集团有限公司,辽宁辽阳111003

出　　处：《有色金属加工》2020年第2期28-31,共4页Nonferrous Metals Processing

摘　　要：研究了一种7175铝合金铸锭的均匀化工艺,通过实际生产与数值模拟计算相结合,优化工艺参数,提升均匀化效果。结果表明,当使用阶段均匀化制度,即第一阶段均匀化440℃×16h、第二阶段均匀化460℃×8h时,合金晶界处的共晶组织基本消除,第二相尺寸降低至30μm以下,含铜相基本全部回溶,均匀化效果良好。In this paper,a homogenization process of 7175 aluminum alloy ingot is studied.By combining actual production with numerical simulation,the process parameters are optimized to improve the homogenization effect.The results show that the eutectic structure at the grain boundary of the alloy is basically eliminated when the homogenization in the first stage is 440℃×16h and the homogenization in the second stage is 460℃×8h,the size of the second phase is reduced to less than 30μm,and the copper-containing phase is almost completely dissolved with good homogenization effect.

关 键 词：7175铝合金 均匀化 数值模拟 显微组织 

分 类 号：TG292[金属学及工艺—铸造]