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Hydrogen Embrittlement of Three High-Manganese Steels Tested by Different Hydrogen Charging Methods
수소 주입 방식에 따른 세 고망간강의 수소 취화 거동 비교
Seung-Yong Lee, Byoungchul Hwang
이승용, 황병철
Korean J. Met. Mater. 2017;55(10):695-702.   Published online 2017 Sep 28
DOI: https://doi.org/10.3365/KJMM.2017.55.10.695

Abstract
In this study the hydrogen embrittlement characteristics of three high-manganese steels were tested using different hydrogen charging methods, and the results were compared with various Mn-containing steels. The results showed that the hydrogen embrittlement susceptibility of the high-manganese steels increased with increasing inherent strength because deformation mechanisms, such as deformation..... More

      
Mechanical Behavior
Sensitivity of Microstructural Factors Influencing the Impact Toughness of Hypoeutectoid Steels with Ferrite-Pearlite Structure using Multiple Regression Analysis
다중회귀분석을 이용한 페라이트-펄라이트 조직 아공석강의 충격인성에 미치는 미세조직적 인자의 민감도 해석
Seung-Yong Lee, Sang-In Lee, Byoungchul Hwang
이승용, 이상인, 황병철
Korean J. Met. Mater. 2016;54(9):637-644.   Published online 2016 Sep 5
DOI: https://doi.org/10.3365/KJMM.2016.54.9.637

Abstract
In this study, the effect of microstructural factors on the impact toughness of hypoeutectoid steels with ferrite-pearlite structure was quantitatively investigated using multiple regression analysis. Microstructural analysis results showed that the pearlite fraction increased with increasing austenitizing temperature and decreasing transformation temperature which substantially decreased the pearlite interlamellar spacing and..... More

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