铝/镁双金属叠层舱段环形通道转角挤压成形工艺研究  

Research on annular channel angular extrusion process of aluminum/magnesium bimetallic laminated cabin section

作　　者：穆星茂 赵熹[1] 李树昌 焦敏航 田学栋 张宇星 Mu Xingmao;Zhao Xi;Li Shuchang;Jiao Minhang;Tian Xuedong;Zhang Yuxing(School of Aerospace Engineering,North University of China,Shanxi Taiyuan,030051,China;Jinxi Axle Co.,Ltd.,Shanxi Taiyuan,030024,China)

机构地区：[1]中北大学航空宇航学院,山西太原030051 [2]晋西车轴股份有限公司,山西太原030024

出　　处：《机械设计与制造工程》2025年第4期37-42,共6页Machine Design and Manufacturing Engineering

基　　金：2022年研究生科技立项资助项目(20221878);山西省2023年度研究生科研创新项目(2023KY630)。

摘　　要：通过环形通道转角挤压成形工艺制备了铝/镁双金属叠层舱段,以叠层金属的流动速度匹配为优化目标,确定最佳成形参数为温度440℃、挤压速度1.0 mm/s及摩擦系数0.1;叠层舱段的退火研究表明,退火时间越长,退火温度越高,界面层厚度越厚,200℃退火1 h后,界面的剪切强度达到最大值89 MPa,较初始挤压态提升9.9%。该研究为双金属叠层舱段的轻量化设计与工程应用提供了理论及技术支撑。An Al/Mg bimetal layered cabin section is fabricated via annular channel angular extrusion forming process.With the optimization objective of achieving flow velocity matching for the layered metals,the optimal forming parameters are determined as temperature 440℃,extrusion speed 1.0 mm/s,and friction coefficient 0.1.Annealing studies reveal that longer annealing time and higher temperatures result in thicker interfacial layers.After annealing at 200℃for 1 hour,the interfacial shear strength reaches a maximum value of 89 MPa,representing a 9.9%increase compared to the initial extruded state.This research provides theoretical and technical support for the lightweight design and engineering applications of bimetal layered cabin sections.

关 键 词：铝/镁双金属 叠层舱段 界面结合强度 环形通道转角挤压 数值仿真 

分 类 号：TG146.22[一般工业技术—材料科学与工程]