|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced Real Time Optical Imaging
||Observations of Ferrite Formation and Growth in Inclusion-engineered Low Alloy Steels during In-situ Heat Treatments
||Wangzhong Mu, Peter Hedström, Hiroyuki Shibata, Pär Jönsson, Keiji Nakajima
|On-Site Speaker (Planned)
High temperature confocal laser scanning microscopy has been applied to study the formation and growth of intragranular ferrite (IGF) in inclusion-engineered steels containing ceramic particles. It is found that the formation of IGF and grain boundary ferrite (GBF) can be controlled by changing the composition of the inclusions, cooling rate and prior austenite grain size. It is concluded that a large grain size and an intermediate cooling rate lead to the highest fraction of IGF in the investigated steel alloys. The findings regarding ferrite formation can be utilized in other low alloy steel grades as well. Finally, the ferrite growth kinetics is investigated by monitoring the growth along the lengthening direction of the IGF. Stereology is considered and the growth rate related to the continuous cooling rate is discussed.
||Planned: Supplemental Proceedings volume