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Finite Element Analysis of Carbon Steel according to Shape and Distribution of Phase

탄소강 조직의 형상 및 분포에 따른 유한요소해석

  • Seo, Dae-Cheol (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Duck-Hee (Dept. of Materials Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Jung-Ju (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Nam, Soo-Woo (Dept. of Materials Engineering, Korea Advanced Institute of Science and Technology) ;
  • Choo, Wung-Yong (Pohang Iron & Steel Co., Ltd. Technical Research Laboratories)
  • 서대철 (한국과학기술원 기계공학과) ;
  • 이덕희 (한국과학기술원 재료공학과) ;
  • 이정주 (한국과학기술원 기계공학과) ;
  • 남수우 (한국과학기술원 재료공학과) ;
  • 주웅용 (포항종합제철(주) 기술연구소 강재용접연구팀)
  • Published : 1997.01.01

Abstract

In this study, the stress-strain relations of steels have been calculated as a function of microstructural morphologies of each phase by use of FEM program(i.e. ABAQUS). The mechanical behavior of low carbon steels is affected by the microstructural factors such as yield ratio, volume fraction, shape and distribution of each phase and so on. The effects of shape, volume fraction and yield ratio of each phase on the mechanical behavior were analyzed by using unit cell and whole specimen size models. Results obtained are summarized as follows. As the yield ratio of hard phase to that of soft phase and volume fraction of hard phase were increased, stress level of flow curves were increased. It was found that in whole specimen size model, as the particle size was decreased, higher stress level was shown. Lastly the relationship between microstructure and tensile properties was examined by using the steels with various microstructural morphologies.