|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Advanced High Strength Steels V
||Microstructural Refinement and Homogenization of High Strength Austenitic Steels for Lightweighting Using Equal Channel Angular Pressing
||Ibrahim Karaman, Matthew Vaughan , Sezer Picak
|On-Site Speaker (Planned)
Fe-Mn-Al-C steels are lightweight alloys that offer great potential as high specific strength materials for weight critical applications. The goal of the current work is to subject Fe-Mn-Al-C to severe plastic deformation via equal channel angular pressing in an effort to explore the strengthening potential of both grain refinement and precipitation hardening in these steels. Precipitation hardening is the method of choice for increasing the strength levels of Fe-Mn-Al-C steels. However, the precipitate distribution in the microstructure is not always homogeneous. In this study, the effect of grain refinement as an additional strengthening mechanism and the role of grain refinement with high dislocation density on the precipitation kinetics and the distribution have been studied for these steels. We have shown that the presence of micro-segregation of Mn have a strong influence on the mechanical properties of Fe-Mn-Al-C steels. ECAP improves the compositional homogeneity and precipitate distribution, leading to higher strengths.
||Iron and Steel, Mechanical Properties,