• Title/Summary/Keyword: Bishop-Hill

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Prediction of Deformation Texture for FCC Metals Using the Finite Element Method (유한요소법을 이용한 면심입방정금속의 변형 집합조직 예측)

  • 권재욱;정효태;오규환;이동녕
    • Transactions of Materials Processing
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    • v.3 no.2
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    • pp.229-242
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    • 1994
  • An approximate procedure based on a combination micro-macroscopic theories of plasticity for predicting the crystallographic texture during the plane strain forming of fcc metals has been developed. This procedure is divided into two steps. Firstly, we extract the history of the deformation gradient at all deformed elements with a elasto-plastic finite element method using isotropic plasticity model. Secondly, we use this deformation gradient history to predict the crystallographic deformation texture based on the Bishop-Hill theory. Renouard and Wintenberger' method is chosen for selecting the active slip systems. The predicted results have been compared with reported experimental results. The calculated results are in good agreement with their results.

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Circular Texture of Drawn High-Carbon Steel Wire for Tire Cord (타이어 코드용 고탄소강선의 원형집합조직)

  • 엄경근;안종규;정효태;이동녕
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 1997.10a
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    • pp.194-197
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    • 1997
  • The texture of a 0.25mm dia high-carbon(0.73%) steel wire made by drawing the patented and brass coated 1.4mm wire through 22 dies with a die-angle of 12$^{\circ}$has been measured. The ideal fiber texture was obtained in the center layer, while the circular texture and the near fiber texture having {111}<110> and weak {112}<110> components were obtained in the intermediate and surface layers, respectively. The circular texture was approximated by {110}<110> plus {110}<114>. The texture could be predicted by the Taylor-Bishop-Hill theory coupled with FEM for deformation.

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