|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Mechanical Behavior at the Nanoscale IV
||Atomistic Investigation into the Mechanical Response of Ferrite-cementite Interfaces in Pearlite
||Matthew Guziewski, Shawn Coleman, Christopher Weinberger
|On-Site Speaker (Planned)
While the behavior of steel has been studied extensively for decades, there are still questions regarding both the microstructures it forms and their resultant mechanical properties. In this talk, atomistics is used to gain further insight into the role these various microstructures play in the mechanical response of pearlite. Models were constructed for the commonly proposed orientation relationships between cementite and ferrite, including the Isaichev, the Bagaryatskii and the Pitsch-Petch, and subjected to both compressive and tensile straining. The resultant dislocation slip stems are characterized and the presence of yield point phenomenon is discussed. Additionally, the effect that interfacial chemistry, lamella thickness and ferrite to cementite ratio is quantified and fit to an elasto-plastic continuum model.
||Planned: Supplemental Proceedings volume