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Jungyun Won(원정윤),Chanmi Moon(문찬미),Sung-Woong Kim(김성웅),Myoung-Gyu Lee(이명규) 한국소성가공학회 2021 한국소성가공학회 학술대회 논문집 Vol.2021 No.5
In this study, mechanical properties and microstructure analyses on the corrosion resistance alloy (CRA) clad plate are conducted for the use of finite element modeling of JCOE piping process. The s teel plate consists of thick carbon steel and thin stainless steel as clad sheet. First, the basic plasticity properties of both constituent materials are measured using the standard mechanical testing, which can be modeled through conventional or advanced elastic-plasticity constitutive models. Then, as additional critical mechanical properties, the interfacial mechanical behavior at bonding surface between carbon steel and stainless steel is analyzed using a lab-scale T peel test and single lap shear test, which dominantly present the normal and tangential delamination at the interface. For the identification of the interface mechanical properties, a hybrid experimental-numerical approach adopting finite element simulations with the cohesive zone model is employed. Additionally, microstructure analysis base d on microscopy, EBSD etc. is also conducted to investigate the effect of microstructure near clad interface on the mechanical behavior of the clad plate.