Gyeongsang National University Metal Center, World's First Identification of Entropy Material 'Single-Range Rule'

Advancing the Realization of a Metal Material Analysis Powerhouse Using Domestic Technology Alone

From the left, Seol Jaebok, Kim Jeonggi, Professor Seong Hyogyeong.

[Asia Economy Yeongnam Reporting Headquarters Reporter Kang Woo-kwon] On the 3rd, Gyeongsang National University announced that the K-Metal Center of the Department of Nano and New Materials Engineering at the College of Engineering, in collaboration with the research team at Pohang University of Science and Technology, recently succeeded in visualizing and measuring the short-range order at the atomic scale present in materials using only domestic technology.

Short-range order refers to the nanoscale local grouping or deviation phenomenon in the arrangement of atoms constituting a material. This achievement is the first in Korea, the world's first case for 'entropy materials,' and the third worldwide following Japan and the United States for materials overall.

Furthermore, it was experimentally revealed for the first time in the world that during cryogenic deformation of 'entropy materials,' short-range order of a few nanometers appears, and as the amount of deformation increases, its density increases, thereby enhancing the strength of the material.

This research was published in the August issue of 'Acta Materialia,' the top-ranked journal in the field of metal materials engineering. It is the result of three years of research since 2017 by a team of 10 experts from Gyeongsang National University and Pohang University of Science and Technology.

Recently, Lawrence Berkeley National Laboratory in the United States experimentally measured the presence of short-range order in titanium alloys using the same experimental method, which was published in the world-renowned scientific journal 'Science Advances' in December 2019.

Professor Seol Jae-bok stated, "This research result can be applied to various materials used in the aerospace industry and polar marine plant material parts business, which is worth about 50 trillion won globally."

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