6061铝合金超薄壁弯管制造工艺及组织性能研究  

Fabrication Process and Microstructure Properties of 6061 Aluminum Alloy Thin Wall Elbow

作　　者：丁月霞[1] 马燕楠 郭群[2,3,4] 王辉[2,3] 马福业 郭训忠[2,3,4] 

机构地区：[1]江苏华阳金属管件有限公司,镇江212400 [2]南京航空航天大学先进材料及成形技术研究所,南京211100 [3]江苏核能装备材料工程实验室,南京211100 [4]南京航空航天大学材料科学与技术学院,南京211100

出　　处：《航空制造技术》2016年第17期50-54,共5页Aeronautical Manufacturing Technology

摘　　要：通过单向拉伸试验建立了材料的本构方程,对6061铝合金板材半片拉深成形过程进行了有限元模拟,研究了摩擦系数与压边力对拉深成形结果的影响规律。模拟结果表明:拉深成形时,应采用较大的压边力和较小的摩擦系数,以避免外管的外弧处易出现明显的起皱缺陷;基于模拟结果,进行了6061铝合金Ф202mm×1mm弯管半片拉深成形;最后对半片焊接后的超薄壁弯管进行了耐压爆破试验及关键部位微观组织分析。The constitutive equation of material is built based on the tensile test. The finite element simulation is carried out on the drawing forming process of 6061 aluminum alloy sheet. The influence of friction coefficient and blank holder force on the results of deep drawing is studied. It is found that, during the process of drawing, a larger blank holder force and a smaller friction coefficient should be used to form the sheet metal. If the smaller friction coefficient and smaller blank holder force are used, obvious wrinkling in the outer arc of the outer tube can be found. Finally, experiments of half sheet deep drawing forming and subsequent welding for the 6061 aluminum alloy tube are performed. Pressure blasting test and microstructure analysis of key parts of the welded tube are conducted.

关 键 词：6061铝合金 超薄壁弯管 有限元模拟 拉深成形 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程]