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2010•Journal of Northeastern UniversityRequires access

Hot Deformation Behavior of High-Manganese TRIP Steel

Wang Guo-dong

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Abstract

The hot deformation behavior and microstructure evolution of high-manganese TRIP (transformation induced plasticity) steel(Fe15Mn3Si3Al) were investigated via hot compression test in a temperature range from 800 to 1 050 ℃ and strain rate ranging from 0.01 to 5.0 s-1. The effects of temperature,strain rate and true strain on the flow behavior and microstructure of the steel were discussed. The results showed that the dynamic recrystallization occurs only at higher temperature and lower strain rate. Hot deformation behavior of the steel specimens is sensitive to temperature and strain rate,while the strain rate affects the hot deformation behavior greatly. The apparent stress exponent and the apparent activation energy of the specimens are 3.909 and 353.167 kJ/mol,respectively. With the experimental data,the hot working equation of the steel is given.

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What this paper is about

The hot deformation behavior and microstructure evolution of high-manganese TRIP (transformation induced plasticity) steel(Fe15Mn3Si3Al) were investigated via hot compression test in a temperature range from 800 to 1 050 ℃ and strain rate ranging from 0.01 to 5.0 s-1. The effects of temperature,strain rate and true strain on the flow behavior and microstructure of the steel were discussed. The results showed that the dynamic recrystallization occurs only at higher temperature and lower strain rate. Hot deformation behavior of the steel specimens is sensitive to temperature and strain rate,while the strain rate affects the hot deformation behavior greatly. The apparent stress exponent and the apparent activation energy of the specimens are 3.909 and 353.167 kJ/mol,respectively. With the experimental data,the hot working equation of the steel is given.

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Available abstract

The hot deformation behavior and microstructure evolution of high-manganese TRIP (transformation induced plasticity) steel(Fe15Mn3Si3Al) were investigated via hot compression test in a temperature range from 800 to 1 050 ℃ and strain rate ranging from 0.01 to 5.0 s-1. The effects of temperature,strain rate and true strain on the flow behavior and microstructure of the steel were discussed. The results showed that the dynamic recrystallization occurs only at higher temperature and lower strain rate. Hot deformation behavior of the steel specimens is sensitive to temperature and strain rate,while the strain rate affects the hot deformation behavior greatly. The apparent stress exponent and the apparent activation energy of the specimens are 3.909 and 353.167 kJ/mol,respectively. With the experimental data,the hot working equation of the steel is given.

Key concepts: Materials science, Strain rate, Microstructure, Manganese, Dynamic recrystallization, Flow stress, Deformation (meteorology), Metallurgy

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