Dongwoo Seo
Pohang University of Science and Technology · Engineering
About the Lab
Professor Dongwoo Seo's research lab specializes in the microstructural design and mechanical behavior of advanced steels, with a focus on microalloyed and high-Mn austenitic steels. The lab investigates phase transformations, precipitate evolution, and hydrogen embrittlement mechanisms to develop high-strength, high-toughness steels with improved resistance to degradation under service conditions. Key research directions include carbide precipitation kinetics, solute effects on deformation mechanisms, and the role of stacking fault energy in controlling fracture modes and hydrogen trapping. The lab combines advanced characterization techniques with thermodynamic and kinetic modeling to guide the development of next-generation structural materials.
Research Overview
Research Output Trend
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Selected Papers
15The interphase precipitation of carbides has been studied in two microalloyed steels containing Ti and Nb, but only one of which contains molybdenum. The precipitates obtained are, therefore, (Ti,Nb)C and (Ti,Nb,Mo)C respectively. It is found that molybdenum significantly reduces the size of the carbide precipitates and also strongly retards their coarsening behaviour during subsequent heat treatment. This is because it enhances the nucleation rate by reducing the interfacial energy, but it is n
Abstract It is known empirically that the addition of aluminium as a solute in high-Mn austenitic steels dramatically improves their resistance to hydrogen-induced embrittlement. A variety of experimental techniques, including the characterization of trapping sites and high-resolution observation of fracture facets, have been used to reveal the mechanism by which aluminium induces this effect. It is found that transgranular fracture is promoted by the segregation of hydrogen to mechanical twin i
Research Areas
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