DOI QR코드

DOI QR Code

모재의 방향성에 따른 마찰교반용접 판재의 성형성에 관한 실험적 연구

Experimental Formability Investigation for FSW Sheets with Respect to Base Material's Directional Combination

  • 김대용 (한국기계연구원 부설 재료연구소 융합공정연구본부) ;
  • 이원오 (한국기계연구원 부설 재료연구소 융합공정연구본부) ;
  • 김준형 (삼성전자 정보통신총괄) ;
  • ;
  • 정관수 (서울대학교 재료공학부)
  • 발행 : 2009.02.01

초록

In order to investigate the formability of friction stir welded(FSW) tailor welded blanks(TWB) with respect to the base material's directional combination, aluminum alloy AA6111-T4 sheets were welded with three different conjoining types: RD-RD, TD-RD and TD-TD. Here, RD and TD represent rolling and transverse directions, respectively. For experimental formability study, three tests with gradual complexity were performed: the simple tension test with various weld line directions for uni-axial elongation, the hemisphere dome stretching test for biaxial stretching and the cylindrical cup deep drawing test. As a result, all three forming tests showed that RD-RD type samples exhibited the best formability, while TD-TD type sheets showed the least formability performance.

참고문헌

  1. M. C. Stasik, R. H. Wagoner, 1998, Forming of tailor-welded aluminum blanks, Int J Form Processes, Vol. 1, pp. 9-34
  2. M. W. Thomas, E. D. Nicholas, J. C. Needham, M. G. Murch, P. Templesmith, C. J. Dawes, GB Patent Applications No. 9125978.8, Dec. 1991; US Patent No. 5460317, Oct. 1995
  3. K. V. Jata, M. W. Mahoney, R. S. Mishra, S. L. Semiatin, D. P. Field, 2001, Friction stir welding and processing I, A Publication of TMS, Warrendale
  4. S. Lim, S. Kim, C. -G. Lee, S. J. Kim, 2005, Mechanical Properties of Friction Stir Welded A1 Alloys with Different Hardening Mechanisms, Mat Mater -Int, Vol. 11. No.2, pp. 113-121 https://doi.org/10.1007/BF03027454
  5. J. H. Cho, S. H. Kang, H. N. Han, K. H. Oh, 2008, Modeling Friction Stir Welding Process of Aluminum Alloys, Mat Mater -Int, Vol. 14, No.2, pp.247-259 https://doi.org/10.3365/met.mat.2008.04.247
  6. W. Lee, K. H. Chung, D. Kim, C. Kim, K. Okamoto, R. H. Wagoner, K. Chung, Experimental and numerical study on formability of friction stir welded TWB sheets based on hemispherical dome stretch tests, Int J Plasticity; in press, doi: 10.1016/j.ijplas.2008.08.005 https://doi.org/10.1016/j.ijplas.2008.08.005
  7. W. Gan, K. Okamoto, S. Hirano, K. Chung, C. Kim, R. H. Wagoner, 2008, Properties of friction-stir welded aluminum alloys 6111 and 5083, J Eng Mater Technol-ASME, Vol. 130, p. 031007 https://doi.org/10.1115/1.2931143
  8. K. Abdullah, P. M. Wild, J. J. Jeswiet, A. Ghasempoor, 2001, Tensile testing for weld deformation properties in similar gage tailor welded blanks using the rule of mixtures, J Mater Process Technol, Vol. 112, pp. 91-97 https://doi.org/10.1016/S0924-0136(01)00555-6

피인용 문헌

  1. Flow Behavior of Laser Welded Boron Steel Sheet in Uniaxial Tension at Elevated Temperature vol.20, pp.5, 2011, https://doi.org/10.5228/KSTP.2011.20.5.362