Minju Kang

TL;DR: In this paper, the effect of entropy on the strength of disordered and ordered phases was investigated, and it was shown that the configurational entropy causes opposing effects on disordered or ordered phases, and the importance of considering entropy on each phase when the number of elements changed, and an alloy is composed of two or more phases, in particular, having BCC structure.

TL;DR: In this article, the authors evaluated the Charpy impact toughness of three austenitic high-Mn steels at room and cryogenic temperatures, and interpreted by deformation mechanisms in relation to the microstructural evolution of dynamically compressed specimens.

TL;DR: In this paper, a plausible explanation of improving dynamic tensile properties by investigating deformation mechanisms using transmission electron microscopy and electron back-scatter diffraction analyses of interrupted tensile specimens is presented.

TL;DR: In this article, the ultrafine-grained (UFG) structure of CoCrFeMnNi high-entropy alloy was achieved using cryogenic multi-pass caliber rolling at 77'K to impose less deformation compared to severe plastic deformation.

TL;DR: In this article, the impact energy characteristics of three tempered martensitic steels were evaluated at room and low temperatures by instrumented Charpy impact tests, and were interpreted by fracture initiation and propagation mechanisms in relation with microstructural evolution of dynamically compressed specimens.