Hot Deformation and Dynamic Recrystallization Behavior of Fe-8Mn-6Al-0.2C Steel

Abstract:

Hot deformation and dynamic recrystallization (DRX) behaviors of Fe-8Mn-6Al-0.2C steel were investigated by means of single-pass compression experiments at temperature ranging from 850 °C to 1150 °C and different strain rate of 0.01~10 s^-1. The flow strain curves were analysed and showed that the higher temperature and lower strain rate led to the smaller critical stress, which meant softening mechanism was easier to occur; The constitutive equation of experimental steel was established and the relationship between peak strain and Z parameter was figured out; A hot processing map of experimental steel was developed over a power dissipation map for the typical strain of 0.9, indicating the best region of high workability in the study conditions. DRX was promoted with increase of deformation temperature and decrease of strain rate, and the banded grains had been broken and grew up obviously.

• Periodical: Materials Science Forum (Volume 898)
• Pages: 797-802
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.898.797
• Online since: June 2017
• Authors: Xuan Li*, Ren Bo Song, Tai Kang, Nai Peng Zhou
• Keywords: Constitutive Equation, Dynamic Recrystallization, Hot Deformation, Hot Processing Map, Medium-Manganese Steel with Aluminum Content

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