| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-59: Bonding Mechanisms between Steels and Mg Alloys having Different Composition using Ultrasonic Spot Welding |
| Author(s) |
Yun-Ta Chung, Jhe-Yu Lin |
| On-Site Speaker (Planned) |
Yun-Ta Chung |
| Abstract Scope |
Joining steel with magnesium (Mg) poses challenges because of their insolubility. This study explores the possibility of joint production between steel/Mg by using ultrasonic welding (USW). To examine the influence of alloying elements on interface formation, pure Mg and AZ31 alloy, were employed to join with 316L stainless steel. Lap shear test evaluating joint strength and scanning electron microscopy (SEM) characterizing interfacial microstructure were performed. Results exhibited that 316L/AZ31 joint revealed a higher joint strength with fracture occurring on the AZ31 side. In contrast, 316L/Mg joint displayed a lower strength with fracture occurring on bonding interface in all specimens. Interfacial microstructure of 316L/AZ31 showed that bonding produced with formation of ultrathin intermetallic compound (IMC) layer with a thickness less than 200 nm, but it was absent at the 316L/Mg interface.
Future works will focus on characterization of these nanoscale reaction layer and compare its impact on joint strength. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Magnesium, Joining, Iron and Steel |