대한금속재료학회지 (Korean Journal of Metals and Materials)

  • 제47권5호
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  • Pages.274-282
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  • 2009
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  • 1738-8228(pISSN)
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  • 2288-8241(eISSN)
대한금속재료학회 (The Korean Institute of Metals and Materials)
권호 표지

DP강의 디프드로잉 시 집합조직 발달과 이방성 거동 시뮬레이션

Simulation of Texture Evolution and Anisotropy Behavior in Dual Phase Steels during Deep Drawing Process

  • Song, Young-Sik (Department of Materials Science and Metallurgical Engineering, Sunchon National University) ;
  • Kim, Dae-Wan (Department of Materials Science and Metallurgical Engineering, Sunchon National University) ;
  • Yang, Hoe-Seok (Department of Materials Science and Metallurgical Engineering, Sunchon National University) ;
  • Han, Sung-Ho (Automotive Steel Products Research Group, POSCO Technical Research Laboratories) ;
  • Chin, Kwang-Gun (Automotive Steel Products Research Group, POSCO Technical Research Laboratories) ;
  • Choi, Shi-Hoon (Department of Materials Science and Metallurgical Engineering, Sunchon National University)
  • 투고 : 2008.12.31
  • 발행 : 2009.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

To investigate the evolution of deformation texture in dual phase (DP) steels during deep-drawing deformation, deep-drawing experiments were performed. Microtexture measurements were conducted using electron backscattered diffraction (EBSD) to analyze texture evolution. A rate-sensitive polycrystal model was used to predict texture evolution during deep-drawing deformation. In order to evaluate the strain path during deep-drawing deformation, a steady state was assumed in the flange part of a deep-drawn cup. A ratesensitive polycrystal model successfully predicted the texture evolution in DP steels during deep-drawing deformation. The final stable orientations were found to be strongly dependent on the initial location in the blank. Texture analysis revealed that the deep drawability of DP steels decreases as the true strain in the radial direction of the deep-drawn cup increases during deep-drawing deformation.

키워드

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