소성∙가공 (Transactions of Materials Processing)

  • 제18권2호
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  • Pages.112-115
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  • 2009
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  • 1225-696X(pISSN)
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  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
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이단성형속도에 따른 AZ31판재 온간 성형성 변화

Warm Formability Variation of AZ31 Sheet by Double Stage Forming Velocity

  • 김흥규 (한국생산기술연구원 금형.성형기술연구부) ;
  • 김종덕 (한국생산기술연구원 금형기술지원센터) ;
  • 허영무 (한국생산기술연구원 금형.성형기술연구부)
  • 발행 : 2009.04.01
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초록

Press forming of magnesium alloy sheet is conducted at elevated temperatures to improve the press formability due to its low formability at room temperature. At elevated temperatures, magnesium alloy sheet formability is known to be very sensitive to the strain rate. In this paper, warm deep drawing tests of magnesium alloy AZ31 sheet was conducted under double forming velocity as well as single forming velocity to examine the formability change by forming velocity profile. The observed formability improvement by double forming velocity was analyzed by using the finite element analysis.

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참고문헌

  1. H. Takuda, T. Yoshii, N. Hatta, 1999, Finite-element analysis of the formability of a magnesium-based alloy AZ31 sheet, J. Mat. Proc. Tech., Vol. 89-90, pp. 135-140 https://doi.org/10.1016/S0924-0136(99)00039-4
  2. F. K..Chen, T. B. Huang, C. K. Chang, 2003, Deep drawing of square cups with magnesium alloy AZ31 sheets, Int. J. Mach. Tool. Manufac., Vol. 43, pp. 1553-1559 https://doi.org/10.1016/S0890-6955(03)00198-6
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  4. H. K. Kim, W. R. Lee, S. K. Hong, J. D. Kim, B. K. Han, 2006, Finite-Element Analysis of Warm Square Cup Deep Drawing Process of Magnesium Alloy AZ31 Sheet, Transactions of Materials Processing, Vol. 15, No.3, pp. 232-240 https://doi.org/10.5228/KSPP.2006.15.3.232
  5. J. G. Park, Y. S. Kim, T. Kuwabara, B. S. You, 2005, Plastic Deformation Characteristic of AZ31 Magnesium Alloy Sheet, Transactions of Materials Processing, Vol. 14, No.6, pp. 520-526 https://doi.org/10.5228/KSPP.2005.14.6.520
  6. N. Ogawa, M. Shiomi, and K. Osakada, 2002, Forming limit of magnesium alloy at elevated temperatures for precision forging, Int. J. Mach. Tool. Manufac., Vol. 42, pp. 607-614 https://doi.org/10.1016/S0890-6955(01)00149-3
  7. S. Yoshihara, H. Yamamoto, K. Manabe, H. Nishimura, 2003, Formability enhancement in magnesium alloy deep drawing by local heating and cooling technique, J. Mat. Proc. Tech., Vol. 143-144, pp.612-615 https://doi.org/10.1016/S0924-0136(03)00442-4
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피인용 문헌

  1. A Comparative Study of Failure Criteria for Magnesium Alloy Sheet under Warm Press Forming Condition vol.21, pp.2, 2012, https://doi.org/10.5228/KSTP.2012.21.2.113