About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Forming and Joining of Advanced Sheet Metal Materials
|
| Presentation Title |
Enhancing Crashworthiness in Multistep Resistance Spot Welding of Advanced High-Strength Steel and 200 Series Austenitic Stainless Steel |
| Author(s) |
Sangbyuk Lee, Juyeong Lee, Taehwan Ko, Jaegyu Jung, Seung Hwan Lee |
| On-Site Speaker (Planned) |
Sangbyuk Lee |
| Abstract Scope |
In this study, weld characteristics of resistance spot welding (RSW) for dissimilar materials between advanced high-strength steel (AHSS) and austenitic stainless steel (ASS) were investigated. With the recent reinforcement of crashworthiness standards for automotive bodies, combining such dissimilar materials has gained attention for producing components with excellent strength and elongation. Especially, for the ASS, the application of 200 series ASS is gaining attention since it is cost-effective due to their lower Ni content compared to the widely used 300 series, but still challenging in RSW for dissimilar materials. Therefore, multistep RSW was introduced for these dissimilar materials to achieve pullout failure which is key criterion for ensuring crashworthiness. Under various multistep RSW conditions, tensile-shear properties were evaluated. Subsequently, the microstructure of the weld joints was analyzed, followed by the microhardness analysis. Consequently, through these metallurgical-mechanical analyses, mechanism of enhancement in tensile-shear characteristics via multistep RSW were elucidated. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Joining, Mechanical Properties |