Microstructural Evolution and Phase Transformation in TWIP Steel

Dear Colleagues,

Twinning-induced plasticity steel (TWIP) is a second-generation advanced high strength steel characterized by a superior combination of strength and ductility. In the past decade, there has been considerable progress in scientific and industrial developments of twinning-induced plasticity (TWIP) steel. Despite that considerable progress in understanding the microstructure–property relationship of TWIP steels, however, some critical issues still remain to be addressed. Novel microstructure design to increase the yield strength of TWIP steels is essential. In this regard, theoretical studies on stacking fault energy and precipitation are required for the optimal design of microstructures. Microstructure evolution during deformation of TWIP steels should be systematically studied to understand the role of each deformation mechanism on the strain hardening behavior of the material. Especially the role of carbon on microstructures and deformation mechanisms of TWIP steels is not yet clear. A clear understanding of microstructure evolution should lead to the development of more reliable micromechanical models on the deformation behavior of TWIP steels. The microstructure evolution during complex forming operations and the prediction of formability are also important subjects. Fundamental research on hydrogen-delayed fracture mechanisms is also required.

Thus, this Special Issue focuses on microstructural evolution and phase transformation in TWIP steels, which will lead to progress in understanding complex microstructure evolution of TWIP steels and the development of novel TWIP steels with superior mechanical properties.

Prof. Dr. Jinkyung Kim
Guest Editor

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