Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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A Study on the Deep Drawing of AZ31B Magnesium Sheet at Warm and Hot Temperature

AZ31B 마그네슘 판재의 온.열간 ?K드로잉에 관한 연구

  • 김한구 (부산대학교 대학원 정밀기계공학과) ;
  • 배정운 (부산대학교 대학원 정밀기계공학과) ;
  • 추동균 (부산대학교 대학원 정밀기계공학과) ;
  • 강충길 (부산대학교 기계공학부)
  • Published : 2006.10.01
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Abstract

The drawability of AZ31B magnesium sheet is estimated at various temperatures($200,\;250,\;300,\;350\;and\;400^{\circ}C$), and forming speed(20, 50, 100mm/min), thickness(0.5, 0.8, 1.0, 1.4mm). The deep drawing process of circular cup and square cup were used in forming experiments. Experimental and FEM analysis are performed to investigate drawability and affection of controlled blank holding force. Through the controlled blank holding force, drawability was improved. Limit drawing ratio is increased from 2.1 to 3.0 in circular cup drawing and change of thickness is decreased from 16.3 to 6.9%. This result is verified by FEM analysis. Through the observation of microstructure, the main cause is investigated as a quantity of the dynamic recrystallization.

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References

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