T2铜箔热辅助超声波增材制造工艺  

Process of Heat-assisted Ultrasonic Additive Manufacturing of T2 Cu Foil

作　　者：桑健 王波[1,2,3] 朱训明 张洪涛 王云峰[2] 金伟 高丙路 常青 何鹏 SANG Jian;WANG Bo;ZHU Xunming;ZHANG Hongtao;WANG Yunfeng;JIN Wei;GAO Binglu;CHANG Qing;HE Peng(College of Materials Science and Engineering,Harbin Institute of Technology at Weihai,Weihai 264209;Weihai Wanfeng Magnesium S&T Development Co.,Ltd.,Weihai 264209;Shandong Institute of Shipbuilding Technology,Weihai 264209)

机构地区：[1]哈尔滨工业大学(威海)材料科学与工程学院,威海264209 [2]威海万丰镁业科技发展有限公司,威海264209 [3]山东船舶技术研究院,威海264209

出　　处：《材料导报》2018年第18期3199-3207,共9页Materials Reports

基　　金：山东省重点研发计划(2017GGX30132);哈尔滨工业大学科研创新基金(HIT.NSRIF.201707);泰山学者青年专家支持计划(tsqn20161062)

摘　　要：利用5kW大功率超声波发生器配合双换能器推挽式滚焊压头进行T2铜箔的超声波增材制造,同时通过辅助加热装置提供外加热场优化焊接过程的热量分布,研究了不同加热温度和不同焊接压强下界面温度对超声波叠焊样品的显微组织、力学性能、断口形貌的影响。结果表明:超声波叠焊样品的固相结合强度在加热温度为100℃时最佳,为24.420N/mm,并随界面最高温度升高先增大后减小。焊接过程中界面金属发生了高频率的塑性变形,发生动态再结晶现象;连接界面处呈漩涡咬合状。剥离界面形貌分析表明良好结合区域的断裂形式均为准解理断裂。The ultrasonic generator of 5 kW high power with double transducer push-pull roll welding head was used to make the ultrasonic incremental manufacturing of T2 Cu foil,and the external thermal field was provided by auxiliary heating device to make the heat distribution optimized in welding process.The influence of interface temperature on microstructure,mechanical pro-perties and fracture morphology of ultrasonic welding samples under different heating temperature and different welding pressure was investigated.The result implied that the solid phase bonding strength of the ultrasonic lap welding sample was best when the heating temperature was 100℃,which was 24.420 N/mm,and it increased first and then decreased with the increase of the interfacial temperature.At the same time,the plastic deformation in high frequency and dynamic recrystallization happened in the metal of ultraso-nic welding combined interface,and it appeared whirlpool and occlusion in the interface.The analysis of the peel interface morphology discovered that all the fracture mode of good bonding region are quasi-cleavage fracture.

关 键 词：T2铜箔 超声波增材制造 热辅助 固相连接 

分 类 号：TG456[金属学及工艺—焊接]