Automotive Steels

1. Ultra high-strength steels design

2. Lightweight steels design

We design novel automotive steels based on Fe-Mn-Al-C system in order to obtain excellent a combination of strength-ductility.

Main strategies are to investigate nano- & micron-scale phase transformation & precipitation behaviors and to correlate them with mechanical properties.

We are focusing on the development of medium- and high-Mn steels and lightweight steels.

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3. Hot-press forming steel design

We study ultra high-strength martensitic steels, Hot Press Forming (HPF) steels, used for the structural pillar parts in the automotive body.

Our interests are to control micro-alloying elements for precipitation & grain refinement and to investigate tensile, bending, impact, and delayed fracture properties.

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*Key Publications

1. Ultra high-strength steels

 

(1) High-Mn
 

Acta Mater. (2018)               https://doi.org/10.1016/j.actamat.2018.12.044
Mater. Sci. Eng. A (2018)    https://doi.org/10.1016/j.msea.2018.10.065
Mater. Sci. Eng. A (2018)    https://doi.org/10.1016/j.msea.2018.09.024

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(2) Medium-Mn

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Acta Mater. (2018)              https://doi.org/10.1016/j.actamat.2018.01.033
Scientific Reports (2017)    https://doi.org/10.1038/s41598-017-01514-9

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2. Lightweight steels

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Acta Mater. (2017)             https://doi.org/10.1016/j.actamat.2017.06.035
Scientific Reports (2017)   https://doi.org/10.1038/s41598-017-02183-4
Acta Mater. (2015)             https://doi.org/10.1016/j.actamat.2015.06.024
Acta Mater. (2014)             https://doi.org/10.1016/j.actamat.2014.06.059
Acta Mater. (2013)             https://doi.org/10.1016/j.actamat.2013.06.004
Acta Mater. (2013)             https://doi.org/10.1016/j.actamat.2013.04.038

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ALLOY DESIGN LAB

for Extreme Environments

145 Anam-ro, Seongbuk-gu, Seoul 02841, South Korea.

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