TY - JOUR
T1 - The effects of intercritical annealing temperature and initial microstructure on the stability of retained austenite in a 0.1C-6Mn steel
AU - Steineder, Katharina
AU - Krizan, Daniel
AU - Schneider, Reinhold
AU - Béal, Coline
AU - Sommitsch, Christof
N1 - Funding Information:
The authors sincerely acknowledge the support of the Austrian Research Promotion Agency (FFG) related to the frontrunner project No. 841377 “Medium Mn steels with superior strength ductility performance”.
Publisher Copyright:
© 2017 Trans Tech Publications, Switzerland.
PY - 2017
Y1 - 2017
N2 - 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.
AB - 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.
KW - Heat treatment
KW - Medium-Mn steel
KW - Retained austenite stability
UR - http://www.scopus.com/inward/record.url?scp=85000384286&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.879.1847
DO - 10.4028/www.scientific.net/MSF.879.1847
M3 - Article
VL - 879
SP - 1847
EP - 1852
JO - Advanced Materials Research
JF - Advanced Materials Research
ER -