|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Ultrafine-grained Materials X
||Effect of Microalloying Additions on the Continuous Recrystallization during Severe High Strain-rate Plastic Deformation
||Janusz Majta, Carl P. Trujillo, Ellen K. Cerreta, Marcin Kwiecien, Krzysztof Muszka
|On-Site Speaker (Planned)
Illegible, inhomogeneous deformation microstructures were observed in most of microalloyed steel specimens deformed at high strain rates. Qualitative and especially quantitative evaluation of complex dislocation-obstacles interactions is extremely difficult in these materials. However, a possibility of such evaluation is necessary for the study of modern severe plastic deformation processes, especially in order to simulate the mechanical response of materials under dynamic loading conditions. The present work aims to compare two processes: Wire Drawing and Multiaxial Compression (Max_Strain System). Both processes consist in the severe plastic deformation but the first process has been performed under dynamic loading conditions i.e. high drawing speed. Microstructure, mechanical properties and texture were compared for both processes on a microlalloyed ferrite and microalloyed austenite. As a result, ultrafine-grained and nanostructured materials were obtained in both processes leading to a controlled deformation inhomogeneity and an improvement of the mechanical properties.
||Planned: Supplemental Proceedings volume