高性能AC4B铝合金的均匀化工艺设计  

Design of Homogenization Process for High-performance Aluminum Alloy AC4B

作　　者：王秋霞 杨海 李春 李明林[2] WANG Qiu-xia;YANG Hai;LI Chun;LI Ming-lin(Fujian Innovation Research Institute,Fuzhou,Fujian,350003,P.R.China;School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou,Fujian,350108,P.R.China;Fujian Huawei Juquan Precision Technologies Co.,Ltd,Fuzhou,Fujian,360111,P.R.China)

机构地区：[1]福建省创新研究院,福建福州350003 [2]福州大学机械工程及自动化学院,福建福州3501081 [3]福建华威钜全精工科技有限公司,福建福州360111

出　　处：《南方金属》2025年第1期1-5,共5页Southern Metals

基　　金：福建省技术创新重点攻关及产业化项目(2023G040)。

摘　　要：均匀化热处理是改善铸锭机械性能的有效方法,但存在能耗高和过烧等问题。针对高性能压力铸造AC4B铝合金的开发,采用CALPHAD方法进行模拟分析,研究设计最优的均匀化处理参数。仿真结果显示:合金中Zn元素和Cu元素的偏析程度最大,在较低温度范围内(≤420℃)最难消除且Cu元素尤甚。然而,经过优化设计的均匀化处理工艺370℃×2 h+508℃×6 h,合金中各元素的偏析均得到消除,Cu元素的偏析量降至0.14wt%。这工艺对于推动均匀化处理工艺的应用及高性能铝合金材料的研发提供了理论指导和设计依据。Homogenization heat treatment is an effective method to improve the mechanical properties of cast ingots,but it has challenges such as high energy consumption and overheating.In order to develop high-performance pressure cast aluminum alloy AC4B,the CALPHAD method was used for simulation analysis to study and design the optimal homogenization heat treatment parameters.The simulation results demonstrate that the elements Zn and Cu exhibit the highest degree of segregation in the alloy,which is most difficult to eliminate,especially in the lower temperature range(≤420℃),with Cu being particularly severe.However,through optimized design,a homogenization treatment process of 370℃×2h+508℃×6h manages to eliminate the segregation of all elements in the alloy,with the segregation of Cu reduced to 0.14 wt%.This study provides theoretical guidance and design basis for promoting the application of homogenization heat treatment processes and the development of high-performance aluminum alloys.

关 键 词：均匀化 铝合金 凝固偏析 

分 类 号：TG146.21[一般工业技术—材料科学与工程]