The Influence of Warm Rolling on Microstructure and Deformation Behavior of High Manganese Steels

Metals

Alexander Schwedt¹  Gerhard Hirt²  Marco Haupt²  Max Müller²  Frederike Brasche³  Christian Haase⁴  Simon Sevsek⁴ 

[1] Central Facility for Electron Microscopy, RWTH Aachen University, 52074 Aachen, Germany;Institute of Metal Forming, RWTH Aachen University, 52072 Aachen, Germany;Institute of Physical Metallurgy and Metal Physics, RWTH Aachen University, 52074 Aachen, Germany;Steel Institute, RWTH Aachen University, 52072 Aachen, Germany;

关键词: high manganese steel;    warm rolling;    processing;    microstructure;    texture;    mechanical properties;    deformation behavior;   

DOI  :  10.3390/met9070797

来源: DOAJ

【 摘 要 】

In this work, a Fe-23Mn-0.3C-1Al high manganese twinning-induced plasticity (TWIP) steel is subjected to varying warm rolling procedures in order to increase the yield strength and maintain a notable ductility. A comprehensive material characterization allows for the understanding of the activated deformation mechanisms and their impact on the resulting microstructure, texture, and mechanical properties. The results show a significant enhancement of the yield strength compared to a fully recrystallized Fe-23Mn-0.3C-1Al steel. This behavior is mainly dominated by the change of the active deformation mechanisms during rolling. Deformation twinning is very pronounced at lower temperatures, whereas this mechanism is suppressed at 500 °C and a thickness reduction of up to 50%. The mechanical properties can be tailored by adjusting rolling temperature and thickness reduction to desired applications.

【 授权许可】

Unknown