The Effects of Intercritical Annealing Temperature and Initial Microstructure on the Stability of Retained Austenite in a 0.1C-6Mn Steel

Katharina Steineder, Daniel Krizan, Reinhold Schneider, Coline Beal, Christof Sommitsch

Research output: Contribution to journalArticle

Abstract

The effects of the intercritical annealing temperature and initial microstructure on the stability of retained austenite were investigated for a 0.1C-6Mn (wt-%) steel. Medium-Mn transformation-induced plasticity (TRIP) steels exhibit a strong dependence of their mechanical properties on the variation of intercritical annealing temperature. This behavior is strongly linked to the amount and stability of the retained austenite. Thus, interrupted tensile tests were used to
examine the effect of annealing temperature on the stabilization of the retained austenite. Detailed microstructural investigations were employed to elaborate the effects of its chemical and mechanical stabilization. Furthermore, the final microstructure was varied by applying the batch annealing step to an initial non-deformed and deformed microstructure respectively. Retained austenite stability along with resulting mechanical properties of the investigated medium-Mn TRIP steel was significantly influenced as the amount and morphology of the respective phases altered as a consequence of both initial microstructure and applied intercritical annealing temperature.
Original languageEnglish
Pages (from-to)1847-1852
JournalMaterials Science Forum
Volume879
Publication statusPublished - 2016
EventTHERMEC - Stadthalle Graz, Graz, Austria
Duration: 29 May 20163 Jun 2016
https://www.tugraz.at/events/thermec-2016/home/

Fields of Expertise

  • Advanced Materials Science

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