|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Advanced High Strength Steels IV
||The Influence of Transformation Induced Plasticity on Damage Development in Third Generation Advanced High Strength Steels
||Javad Samei, Concetta Pelligra, David Wilkinson
|On-Site Speaker (Planned)
Recent advances in heat treatment optimization to retain austenite at ambient temperatures has led to an industrial break-through in attaining advanced high strength steels with exceptional strengths and ductility. Considerable research has been invested in creating these steels; however, little is known on the extent to which transformation-induced plasticity (TRIP) in 3G steels can suppress damage. X-ray computed microtomography (µXCT) was used to quantify 3D damage evolution as a function of strain. Damage-strain curves on a variety of medium to high strength DP and TRIP steels suggests that a refined microstructure and TRIP shows the most delayed fracture. Investigations isolating the impact of TRIP on damage was attained through the comparison of damage evolution in a 3G Medium Mn steel subjected to slight changes in intercritical annealing. Extensive use of µXCT on a single Medium Mn steel has enabled an accurate assessment of the influence of TRIP kinetics on damage.
||Planned: Supplemental Proceedings volume