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Hydride Precipitation Behavior with Hydrogen Concentration and Homogenization Temperature in Zr-2.5%Nb Pressure Tube Material
Zr-2.5%Nb 압력관 재료에서 수소 농도와 균질화 처리 온도에 따른 수소화물 석출 거동

Sang Yup Lim, SungSoo Kim, Gyeong-Geun Lee
임상엽, 김성수, 이경근

Korean J. Met. Mater. 2019;57(4):203-213. Published online 2019 Apr 5
DOI: https://doi.org/10.3365/KJMM.2019.57.4.203

Abstract
The precipitation characteristics of hydrides in Zr-2.5% Nb pressure tube material were investigated for various hydrogen concentrations and homogenization temperatures. A surface hydride was formed using the electrolytic method and homogenized at various temperatures up to at 550 oC. The homogenization treatment was carried out at 300-550 oC over 240..... More

Phase-field Modeling of Precipitate Behavior in RPV Steel Using CALPHAD Database

Kunok Chang, Junhyun Kwon, Gyeong-Geun Lee

Korean J. Met. Mater. 2018;56(6):472-478. Published online 2018 Jun 4
DOI: https://doi.org/10.3365/KJMM.2018.56.6.472

Abstract
We developed a multi-scale modeling framework using the thermodynamic UW1 database of the Fe-Mn-Ni-Si quaternary system. To obtain input data for the phase-field model, such as mobility and interfacial energy data, we used DICTRA software and the TC-PRISMA package with the commercial TCFE8 and MOBFE3 databases. Using the developed framework,..... More

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