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Precise Flow Stress Analysis for the Occurrence of Dynamic Ferritic Transformation and Dynamic Recrystallization of Austenite in Low Carbon Steel
고온 변형 곡선을 이용한 동적 재결정 해석과 동적 상변태의 조기 예측
Nokeun Park
박노근
Korean J. Met. Mater. 2018;56(11):779-786.   Published online 2018 Nov 5
DOI: https://doi.org/10.3365/KJMM.2018.56.11.779

Abstract
There have been previous attempts to observe the occurrence of dynamic ferritic transformation at temperatures even above Ae3 in a low-carbon steel, and not only in steels, but recently also in titanium alloys. In this study, a new approach is proposed that involves treating true stress-true strain curves in uniaxial..... More

                        
Effect of Anisotropy on Springback Prediction in Forming of 590MPa High Strength Steel
590MPa급 고강도강의 성형 시 스프링백 예측 정확도에 미치는 판재이방성의 영향
Se Kye Park, Eung Ryul Baek, Nokeun Park
박세계, 백응률, 박노근
Korean J. Met. Mater. 2018;56(3):210-220.   Published online 2018 Mar 6
DOI: https://doi.org/10.3365/KJMM.2018.56.3.210

Abstract
Material parameters, extracted from mechanical behavior in a uniaxial direction without considering anisotropy in the rolling direction, are commonly used when doing forming analysis. However, when these material parameters are used for the forming analysis of a material which has large anisotropy, inaccurate analysis results can be obtained. In this..... More

      
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