锥形端面对铝/钢连续驱动摩擦焊温度场的数值模拟研究  

Numerical Simulation Study on Temperature Field of ContinuousDrive Friction Welding of Aluminum/Steel with Conical Terminal

作　　者：张昌青[1,2] 师文辰 罗德春[3] 王树文 刘晓 崔国胜 陈波阳 张忠科[2] 辛舟[3] 芮执元[3] ZHANG Changqing;SHI Wenchen;LUO Dechun;WANG Shuwen;LIU Xiao;CUI Guosheng;CHEN Boyang;ZHANG Zhongke;XIN Zhou;RUI Zhiyuan(State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metal,Lanzhou University of Technology,Lanzhou 730050,China;School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China;School of Mechanical and Electrical Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,兰州730050 [2]兰州理工大学材料科学与工程学院,兰州730050 [3]兰州理工大学机电工程学院,兰州730050

出　　处：《材料导报》2022年第15期153-159,共7页Materials Reports

基　　金：国家自然科学基金(51961025)。

摘　　要：接头结构设计是连续驱动摩擦焊的一项重要工艺措施,对改善界面产热功率的不均匀性和提升接头力学性能有显著作用。本工作在钢侧待焊端面设计5°、10°、15°、20°、25°的锥度角,利用ABAQUS进行有限元分析,采用耦合的欧拉-拉格朗日方法,建立了焊接过程的三维热力耦合模型,分析了锥度大小对接头成型、温度场分布、塑性金属形成的变化规律,并开展焊接实验,验证了计算结果的准确性。结果表明:接头宏观形貌、轴向缩短量与实验结果吻合较好,计算温度与实测数据相对误差约为3.5%~4.8%,变化趋势相同;锥形结构使界面高温区域发生移动,5°与15°接头2/3 R处温度最高,25°接头1/3 R处温度最高,产热集中位置向界面中心移动,产热集中区域宽度变窄,塑性环的位置、宽度与计算的温度场具有较好的一致性。The structural design of joint is an important process measure of continuous drive friction welding,which has a significant effect on improving the non-uniformity of heat generation power of interface and improving the mechanical properties of joint.This work designed 5°,10°,15°,20°,25°taper degree on the steel,analyzed finite element on ABAQUS,established the three-dimensional thermal-mechanical coupling model of welding process with the coupled Eulerian-Lagrangian method,analyzed the influence of the taper degree on the change law of joint forming,the temperature field distribution and the plastic metal forming,and carried out welding experiments to verify the accuracy of the calculation results.The results show that the macroscopic morphology and axial shortening of the joint are in good agreement with the experimental results.The relative error between the calculated temperature and the measured data is about 3.5%—4.8%,and the variation trends are the same.The taper structure makes the high temperature area of the interface move,and the temperature at 2/3 R of the 5°and 15°joints is the highest,while the temperature at 1/3 R of the 25°joints is the highest.The heat concentration location moves towards the center of the interface,and the width of the heat concentration area becomes narrower.The position and the width of the plastic ring are in good agreement with the calculated temperature field.

关 键 词：连续驱动摩擦焊 锥度接头 耦合的欧拉-拉格朗日法 数值模拟 温度场 

分 类 号：TG456.9[金属学及工艺—焊接]