|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Phase Transformations in Multi-component Systems: An MPMD Symposium Honoring Gary R. Purdy
||The Effect of C and N on the Cyclic Partial Phase Transformation Behaviour in an Mn Containing Steel
||Sybrand van der Zwaag, Hussein Farahani, Hatem S. Zurob
|On-Site Speaker (Planned)
||Sybrand van der Zwaag
In recent years the concept of partial cyclic phase transformations in the austenite-ferrite region has yielded new and valuable insight into the partitioning of Mn at the moving interface for a range of C-Mn and other C-X steels. It was shown that the effects recorded in dilatometry are well described by the local equilibrium model. In all experiments reported to date the attention was focussed on the role of the substitutional alloying element.
In the present work we focus on the effect of the interstitials on the partial cyclic phase transformation kinetics for a steel containing 2.4 wt% Mn. Three conditions were explored : the original steel grade, containing 0.1% C; the same steel after complete decarburisation (i.e essentially interstitial free) and finally the same steel after complete decarburisation and subsequent re-nitriding.
In the presentation we will show the results of dilatometric experiment using both “type I” and ‘type H” cycling. The data yield very interesting new insights into the effect of the interstitials on the Mn partitioning and the transformation kinetics for non-monotonous cooling-heating experiments.
||Planned: A print-only volume