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HomeKey Engineering MaterialsKey Engineering Materials Vol. 727The Strength-Ductility Balance of an...

The Strength-Ductility Balance of an Ultrafine-Grained Medium-Carbon Steel Produced by Severe Plastic Deformation

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Abstract:

By processing with different high pressure torsion procedures, we obtained ultrafine-grained structures in medium-carbon steel and pure iron with different microstructural features. The UFG carbon steel exhibited a better balance of tensile strength and ductility in comparison with the UFG pure iron. The higher strength of the carbon steel is ascribed to the finer ferrite grain size, the dispersed carbide particles and the presence of alloying elements. The reasonable ductility of carbon steel is attributed to the maintaining of positive work hardening rate at high strain stage of tension, owing to the presence of intragranular particles and high fraction of high-angle boundaries.

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Functional Materials Research II

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Periodical:

Key Engineering Materials (Volume 727)

Pages:

211-217

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.727.211

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Online since:

January 2017

Authors:

Jiang Li Ning*, Lu Huang, Ya Tong Zhang

Keywords:

Severe Plastic Deformation, Strength-Ductility Combination, Ultrafine-Grained Steel, Work Hardening

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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