|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||High Performance Steels
||Hydrogen Embrittlement Susceptibility of a High Manganese Twinning Induced Plasticity Steel Examined via Correlative Microscopy
||Heena Khanchandani, Leigh Stephenson, Dierk Raabe, Stefan Zaefferer, Baptiste Gault
|On-Site Speaker (Planned)
Twinning induced plasticity (TWIP) steels are promising structural materials, belonging to a class of high manganese steels having austenite phase with face centred cubic crystal structure. Several studies have been carried out to understand the hydrogen embrittlement mechanism in TWIP steels [An et al., Int J Plast 2019]. Yet, the actual prevalent mechanism is not fully understood. We present our studies based on the hydrogen embrittlement susceptibility of a model TWIP steel Fe 28Mn 0.3C (Wt. %) alloy which was cold rolled and subsequently recrystallized. The studied TWIP steel sample was cathodically charged with hydrogen for 5 days and subjected to the tensile tests. The microstructural evolution was examined with and without hydrogen precharging at different stages of tensile deformation, using electron backscatter diffraction (EBSD) and electron channelling contrast imaging (ECCI) techniques. It was observed that the dislocation arrangement changes after hydrogen charging at different stages of the tensile deformation.
||Iron and Steel, Characterization, Other