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Meeting MS&T22: Materials Science & Technology
Symposium Advances in Zinc-coated Sheet Steel Processing and Properties
Presentation Title Microstructure Evolution during Early Stages of Liquid Metal Embrittlement in an Advanced High-strength-steel
Author(s) Yuki Ikeda, Renliang Yuan, Hassan Ghassemi-Armaki, Anirban Chakraborty, Jim Zuo, Robert Maass
On-Site Speaker (Planned) Robert Maass
Abstract Scope Despite the high strength and ductility of advanced high-strength steels (AHSS), Zn coatings typically applied to increase the corrosion resistance can be the origin of mechanical property degradation after joining. This property degradation is a manifestation of the well-known Liquid Metal Embrittlement (LME) phenomena, during which liquified Zn infiltrates into the substrate along grain boundaries (GBs). Previously, we have revealed the nucleation and growth of nano-scale intermetallic phases inside uncracked GBs (Materials Today Advances 13, 100196, 2022), which highlights the multi-phase microstructure developing before cracking occurs. To shed further light on the early stages of LME in AHSS, we report here on the microstructural evolution of interrupted welds by using analytical scanning transmission electron microscopy. We discuss these findings in the context of the time-resolved substructure evolution right beneath the interface between the AHSS and the Zn-based coating and track how Zn progressively infiltrates the substrate along phase and GBs.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Alleviation of Zn-assisted Liquid Metal Embrittlement in Austenitic-TWIP/martensitic-HSLA Steel Multi-layered Sheet Additively Manufactured by Directed Energy Deposition
An Exploration of a Neural Network Approach for the On-line Prediction of Steel Strip Radiative Properties
Leaching Zinc Ions from Industrial Waste Ashes a Kinetic Study and Development of a Semi-empirical Model.
Microstructure Evolution during Early Stages of Liquid Metal Embrittlement in an Advanced High-strength-steel
The Interaction between Mn and Sn and Its Effects on the Selective Oxidation of Advanced High Strength Steels
Zinc Coatings and Their Control Using the New Integrated Indicator ECP-Zn

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