Aluminum-nickel is an important electrode material which has good application prospects to study the bonding mechanism and optimization technology of the joints. Ultrasonic welding of dissimilar metals, 1A99 aluminum alloy and N4 nickel alloy, were conducted in this research. The effect of welding energy on mechanical properties, macro morphology, atomic diffusion and fracture mode of the welded joints have been analyzed emphatically. The results show that under the high-frquency ultrasonic vibration, a sound aluminum to nickel ultrasonic welding joint is successfully obtained. The maximum tensile shear load of joint can reach 1121N at the welding energy of 600J. The hardness profile of aluminum side which is close to the sonotrode tip is decreased, while the hardness of nickel side is slightly increased during the welding process. By increasing the welding energy, the indentation depth on aluminum side is increased, and significant deformation of joints in the thickness direction is observed when the energy reaches 700J. The scanning electron microscope (SEM) and energy dispersive spectrometer (EDS) analysis show that a 5.29μm thick transition layer in the faying interface between Al and Ni is found under the optimized welding parameters. And there is no intermetallic compound (IMC) formed in the joint. The brittleness problem of Al-Ni dissimilar metal joints caused by traditional fusion welding methods is solved in this study, which lays a theoretical foundation for promoting the development of Al-Ni electrode materials.
ZHANG Wei，AO Sansan， LUO Zhen，HAO Zhizhuang，CHEN Yao，FENG Mengnan，XIE Yan
. Effect of Welding Energy on the Performance of
Aluminum-Nickel Ultrasonic Welding Joints[J]. Journal of Shanghai Jiaotong University, 2019
, 53(9)
: 1130
-1135
.
DOI: 10.16183/j.cnki.jsjtu.2019.09.016
［1］NI Z L, YE F X. Weldability and mechanical properties of ultrasonic welded aluminum to nickel joints ［J］. Materials Letters, 2016, 185: 204-207.
［2］解龑, 罗震, 冯梦楠, 等. Al-Ni 异种材料超声波点焊工艺参数的优化设计［J］. 上海交通大学学报, 2016, 50(10): 1564-1568.
XIE Yan, LUO Zhen, FENG Mengnan, et al. Optimization of ultrasonic spot welding parameters for Al-Ni joints based on orthogonal test ［J］. Journal of Shanghai Jiao Tong University, 2015, 50(10): 1564-1568.
［3］KIM T H, YUM J, HU S J, et al. Process robustness of single lap ultrasonic welding of thin, dissimilar materials ［J］. CIRP Annals: Manufacturing Technology, 2011, 60(1): 17-20.
［4］PRANGNELL P, HADDADI F, CHEN Y C. Ultrasonic spot welding of aluminum to steel for automotive applications: Microstructure and optimisation ［J］. Materials Science and Technology, 2011, 27(3): 617-624.
［5］PATEL V K, CHEN D L, BHOLE S D. Dissimilar ultrasonic spot welding of Mg-Al and Mg-high strength low alloy steel ［J］. Theoretical and Applied Mechanics Letters, 2014, 4(4): 041005.
［6］PANTELI A, ROBSON J D, BROUGH I, et al. The effect of high strain rate deformation on intermetallic reaction during ultrasonic welding aluminium to magnesium ［J］. Materials Science and Engineering: A, 2012, 556: 31-42.
［7］MACWAN A, CHEN D L. Ultrasonic spot welding of rate-earth containing ZEK100 magnesium alloy to 5754 aluminum alloy ［J］. Materials Science and Engineering: A, 2016, 666: 139-148.
［8］赵玉津, 张慧敏, 罗震, 等. 焊接能量对铝/钛超声波焊接接头性能的影响［J］. 天津大学学报, 2017, 50(1): 43-48.
ZHAO Yujin, ZHANG Huimin, LUO Zhen, et al. Effect of welding energy on the performance of the Al/Ti joints obtained by ultrasonic welding ［J］. Journal of Tianjin University, 2017, 50(1): 43-48.
［9］ZHANG C Q, ROBSON J D, CIUCA O, et al. Microstructural characterization and mechanical properties of high power ultrasonic spot welded aluminum alloy AA6111-TiAl6V4 dissimilar joints ［J］. Materials Characterization, 2014, 97: 83-91.
［10］ZHANG C Q, ROBSON J D, PRANGNELL P B. Dissimilar ultrasonic spot welding of aerospace aluminum alloy AA2139 to titanium alloy TiAl6V4 ［J］. Journal of Materials Processing Technology, 2016, 231: 382-388.
［11］FUJII H T, GOTO Y, SATO Y S, et al. Microstructure and lap shear strength of the weld interface in ultrasonic welding of Al alloy to stainless steel ［J］. Scripta Materialia, 2016, 116: 135-138.
［12］HADDADI F, ABU-FARHA F. The effect of interface reaction on vibration evolution and performance of aluminum to steel high power ultrasonic spot joints ［J］. Materials & Design, 2016, 89: 50-57.
［13］MACWAN A, KUMAR A, CHEN D L. Ultrasonic spot welded 6111-T4 aluminum alloy to galvanized high-strength low-alloy steel: Microstructure and mechanical properties ［J］. Materials & Design, 2017, 113: 284-296.
［14］YANG J, GAO B. Investigation of resistance heat assisted ultrasonic welding of 6061 aluminum alloys to pure copper ［J］. Materials & Design, 2015, 74: 19-24.
［15］李东, 赵杨洋, 张延松. 焊接能量对铝/铜超声波焊接接头显微组织的影响［J］. 焊接学报, 2014, 35(2): 47-50.
LI Dong, ZHAO Yangyang, ZHANG Yansong. Effect of welding energy on microstructures of the Al/Cu joints obtained by ultrasonic welding ［J］. Transactions of the China Welding Institution, 2014, 35(2): 47-50.
［16］朱政强, 曾纯, 张义福, 等. 铝钛异质材料超声波焊接研究［J］. 热加工工艺, 2011, 40(7): 118-120.
ZHU Zhengqiang, ZENG Chun, ZHANG Yifu, et al. Study on ultrasonic welding of Al/Ti dissimilar alloys ［J］. Hot Working Technology, 2011, 40(7): 118-120.
