Hot compression tests of a new high-Mn austenitic steel were carried out at deformation temperatures of
700, 800, 900, and 1000 C under strain rate of 0.01 s21. The hot deformation behavior was investigated by
the analyses of flow curves, texture, and deformed microstructures. Microstructures of the deformed
specimens and macrotexture were examined using electron backscatter diffraction and x-ray diffraction
methods, respectively. The results showed that the flow stress depended strongly on the deformation
temperature and decreased by increasing deformation temperature. The microstructural evidence indicated
that the dynamic recrystallization (DRX) process of experimental steel was initiated at 800 C with necklace
structure. The volume fraction of DRX grains was considerably increased by increasing deformation
temperature to 1000 C. Texture of the DRX grains tended to become a weak texture and was associated
with the formation of Goss and R-Cube components. Meanwhile, martensitic transformation was detected
in the hot-deformed austenite. The martensitic transformation was the most difficult in the DRX grains
because of the