| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advances in Metallic Coated Advanced Steels
|
| Presentation Title |
Liquid Metal Embrittlement in Zinc-Coated Advanced High-Strength Steels |
| Author(s) |
Lawrence Cho, Diptak Bhattacharya, Kip O. Findley, John G Speer |
| On-Site Speaker (Planned) |
Lawrence Cho |
| Abstract Scope |
The risk of liquid metal embrittlement (LME) of zinc-coated advanced high strength steels (AHSS) during resistance spot welding (RSW) has been recognized for many years, but the underlying mechanisms have remained unclear. A difficulty in elucidating these mechanisms is associated with the complex interplay of factors such as alloying elements, strength, and multi-phase microstructures. Recent investigations employing multiscale characterization techniques and thermodynamic/kinetic calculations have delivered insight into the role of alloying and microstructures in the LME mechanisms in zinc-coated AHSS. This presentation will introduce these studies, highlighting the critical role of specific alloying elements, such as silicon, in the reaction between the steel and zinc coating during RSW, along with various LME mechanisms discussed in the literature. |