消除Al-Zn-Mg-Cu合金六角棒表面粗晶的研究  

Optimization of surface coarse crystal of Al-Zn-Mg-Cu aluminum-alloy extruded hexagonal bar

作　　者：于达 雷金琴[1] 王英君[1] 丛福官[1] 路丽英[1] 关天洋 周保成 张春龙[1] 陈勇 王晨阳 YU Da;LEI Jinqin;WANG Yingjun;CONG Fuguan;LU Liying;GUAN Tianyang;ZHOU Baocheng;ZHANG Chunlong;CHEN Yong;WANG Chenyang(Northeast Light Alloy Co.,Ltd.,Harbin 150060,China;Chinalco Materials Application Research Institute Co.,Ltd.,Beijing 102209,China;Zunyi Aluminum Industry Co.,Ltd.,Zunyi 563100,China;College of Materials Science and Engineering Jiamusi University,Jiamusi 154007,China)

机构地区：[1]东北轻合金有限责任公司,哈尔滨150060 [2]中铝材料应用研究院有限公司,北京102209 [3]遵义铝业股份有限公司,遵义563100 [4]佳木斯大学材料科学与工程学院,佳木斯154007

出　　处：《轻合金加工技术》2025年第1期10-16,共7页Light Alloy Fabrication Technology

基　　金：国家自然科学基金(52301133);中国博士后科学基金(2023M730276);中国科学技术协会青年人才托举工程(YESS20210415);重庆科技大学硕士研究生创新计划项目(YKJCX2320213,YKJCX2320218,YKJCX2320206)。

摘　　要：为了解决现有挤压六角棒的表面粗晶问题,采用DEFORM-3D软件对异型截面六角棒成品模具进行优化设计,并用优化的模具对Al-Zn-Mg-Cu合金圆棒开展不同拉拔变形加工量的试制及模拟验证,获得适宜的生产工艺。生产验证和检测分析表明,采用大的拉拔变形加工率(不小于25%)和适宜直径的拉拔坯料,可获得表面无粗晶的六角棒,且六角棒边角金属充盈较好、强度和应力腐蚀性能等均满足AMS QQ-A-225/9标准要求,尺寸精度满足GB/T 3191-2019标准要求。In order to solve the surface coarse grain problem of existing extruded hexagonal bars,DEFORM-3D software was used to optimize the finished mold design for hexagonal bars with irregular cross-sections.The optimized molds were used to carry out optimized trial production and simulation verification on Al-Zn-Mg-Cu aluminum alloy round bars with different drawing rates.The appropriate drawing rate and production process were obtained thereafter.It is found through production verification,test and analysis that a high drawing rate(not less than 25%)and suitable thickness of the drawing billet can solve the surface coarse grain problem of extruded hexagonal bars.And hexagonal bars have good metal filling and high dimensional accuracy.The strength and stress corrosion resistance of hexagonal bars meet the requirements of AMS QQ-A-225/9 standard,and the dimensional accuracy meets the requirements of GB/T 3191-2019 standard.

关 键 词：六角棒 AL-ZN-MG-CU合金 六角棒拉拔模 表面粗晶 

分 类 号：TG356.3[金属学及工艺—金属压力加工] TG359