About this Abstract |
Meeting |
2021 AWS Professional Program
|
Symposium
|
2021 AWS Professional Program
|
Presentation Title |
Influence of Vibration on Ultrasonically Joining Steel-Mg Structures |
Author(s) |
Jian Chen, Hui Huang, Jiahao Cheng, Yong Chae Lim, Xiaohua Hu, Zhili Feng |
On-Site Speaker (Planned) |
Jian Chen |
Abstract Scope |
With increasing demand of lightweight materials in automobiles, magnesium (Mg) alloys have received much attention due to their low density and high specific strength. Joining Mg alloys with steel is challenging using conventional fusion welding processes due to the large differences in physical and chemical properties of these two materials. Recently, ultrasonic spot welding (USW), a solid-state joining technique, has been applied to join Mg and steel. Mechanical testing and microstructural characterization reveal that strong and metallurgical bond was obtained at the faying interface.
One of the remaining challenges to apply USW process in real-world applications is the difficulty in joining structural component with complex geometries because of the complexity of vibration interaction. In the current research, ultrasonically joining component level steel-Mg structures that consist of multiple spot joints is in progress. Advanced in-situ monitoring, postmortem characterization techniques and numerical models are applied to study the variation of in-process parameters including structural vibration and heat generation during making joints at different locations. |
Proceedings Inclusion? |
Definite: Other |