7075铝合金接触固溶工艺参数优化  

Parameter optimization of contact solid solution process for 7075 aluminum alloy

作　　者：刘持振 安保芹 解焕阳 杨茴茴 朱伟东 张志强[3] LIU Chi-zhen;AN Bao-qin;XIE Huan-yang;YANG Hui-hui;ZHU Wei-dong;ZHANG Zhi-qiang(PHS Research Branch Institute,Lingyun GNS Techbology Co.,Ltd.,Yantai 264000,China;Lingyun Central Research Institute,Shanghai Lingyun Industrial Technology Co.,Ltd.,Shanghai 201708,China;College of Materials Science and Engineering,Jilin University,Changchun 130015,China)

机构地区：[1]凌云吉恩斯科技有限公司热成形技术研究分院,山东烟台264000 [2]上海凌云工业科技有限公司凌云中央研究院,上海201708 [3]吉林大学材料科学与工程学院,吉林长春130015

出　　处：《塑性工程学报》2024年第8期100-106,共7页Journal of Plasticity Engineering

摘　　要：为探索接触固溶过程中实验参数对7075铝合金成形件性能的影响,以7075-T6铝合金板材为研究对象,首先进行了接触固溶成形实验,获得了不同实验参数下的成形件并分别进行性能测定。然后采用响应面法分析了接触固溶温度、固溶时间和接触压强对零件洛氏硬度、抗拉强度和断后伸长率的影响,并根据实验数据,采用遗传算法进行多目标优化,得到满足多性能要求的工艺参数,确定了符合要求的优化解。结果表明,在接触固溶温度为475℃、固溶时间为32 s,接触压强为13 MPa时,可以获得同时保证多个综合性能的最优解。To explore the effect of experimental parameters on the properties of 7075 aluminum alloy formed parts in the contact solid solution process,7075-T6 aluminum alloy sheet material was taken as the research object,firstly,the contact solid solution forming experiments were carried out to obtain the formed parts with different experimental parameters and to measure the properties respectively.Then,the effects of contact solution temperature,solid solution time and contact pressure on Rockwell hardness,tensile strength and elongation after fracture of parts were analyzed by response surface method.Based on experimental data,the genetic algorithm was used for multi-objective optimization to obtain process parameters that meet the requirements of multiple performance,then the optimization solution that meets the requirements was determined.The results show that the optimal solution that ensures multiple comprehensive performance can be obtained at contact solution temperature of 475℃,solid solution time of 32 s and contact pressure of 13 MPa.

关 键 词：7075铝合金 热冲压 接触固溶 响应面法 多目标优化 

分 类 号：TG306[金属学及工艺—金属压力加工] TG146.21[一般工业技术—材料科学与工程]