|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced High-strength Steels
||In Situ μ-DIC Measurements of Strain Partitioning in Medium Mn Steel
||Aniruddha Dutta, Dirk Ponge, Stefanie Sandlöbes, Dierk Raabe
|On-Site Speaker (Planned)
The multi-phase systems obtained during intercritical annealing treatments in medium Mn steels, result in a complex ultra-fine grained microstructure with multiple ductility enhancing mechanisms. The complex multi-phase microstructure consisting of austenite and martensite, results in a complex deformation mechanism with the possibility of the austenite to show TWIP + TRIP mechanisms. Through the present research, an attempt was made to experimentally validate the strain partitioning mechanism. Here a novel microscopic - digital image correlation (µ-DIC) approach developed by D.Yan was used along with in situ tensile testing technique to understand the strain partitioning effects on different processing parameters at a micro-meter leve between different phases. Differences between cold rolled and hot rolled samples which show different strain hardening characteristics were addressed through the mechanisms of strain partitioning between phases which ultimately contributes to a superior mechanical behavior of medium manganese steel.
||Planned: Supplemental Proceedings volume