|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced Real Time Optical Imaging
||In-situ Studies of Selective Oxidation in Advanced High Strength Steels
||Mary Story, Bryan Webler
|On-Site Speaker (Planned)
Advanced High Strength Steels (AHSS) containing Mn, Si, and Al alloy additions exhibit desirable mechanical properties for automotive applications. Selective oxidation of these elements occurs during annealing prior to hot rolling and the oxides that form can inhibit zinc coating adherence. Better strategies are needed to control oxidation and improve coatability. This work documents studies on the oxidation fundamentals of these steels. A confocal scanning laser microscope (CSLM) equipped with an imaging furnace was used for in-situ studies. Rapid and controlled heating and cooling rates were possible with this setup and the gas atmosphere could be controlled to allow industrially-relevant annealing cycles to be simulated. The in-situ observations were correlated with ex-situ observations of the sample cross-section produced by focused ion beam (FIB) milling. The combined observations have been used to study the effect of gas atmosphere, alloy chemistry and near-surface microstructure on the oxidation of several AHSS grades.
||Planned: Supplemental Proceedings volume