Effect of Strain Rate on the Microstructures and Properties of Hot–Rolled TWIP Steel in the Solution Condition

Yang Yang; Chun Fu Li; Kai Hong Song

doi:10.4028/www.scientific.net/AMR.430-432.256

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 430-432Effect of Strain Rate on the Microstructures and...

Effect of Strain Rate on the Microstructures and Properties of Hot–Rolled TWIP Steel in the Solution Condition

Abstract:

TWIP steel containing 0.21% C, 24.4% Mn, 0.9% Si, 1.84% Al, 4.61% Cr, 1.89% Ni, 0.41% Mo and 0.012% Nb was investigated. Tensile tests of this steel were performed in the strain rate range of 10−4–10−3 s−1. Results indicate that tensile properties of TWIP steel at room temperature are sensitive to strain rate in the studied range. Analyses on the relationship between strain–hardening exponent and strain rates show that the formation of twins during deformation greatly affects the strain–hardening behavior of TWIP steels.