Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Dissimilar Friction Stir Welding Characteristics of Mg Alloys(AZ31 and AZ61)

AZ31와 AZ61 마그네슘 합금의 이종 마찰교반용접 특성

  • Park, Kyoung Do (Human Resources Development, The Korea Chamber of Commerce & Industry) ;
  • Lee, Hae Jin (Dong Busan Campus of Korea Polytechnic) ;
  • Lee, Dai Yeol (Human Resources Development, The Korea Chamber of Commerce & Industry) ;
  • Kang, Dae Min (School of Mechanical Engineering, Pukyong National University)
  • 박경도 (대한상공회의소 부산인력개발원) ;
  • 이해진 (한국폴리텍대학 동부산캠퍼스) ;
  • 이대열 (대한상공회의소 부산인력개발원) ;
  • 강대민 (부경대학교 기계공학과)
  • Received : 2017.07.03
  • Accepted : 2017.09.19
  • Published : 2017.10.31
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Abstract

Friction stir welding is a solid-state joining process and is useful for joining dissimilar metal sheets. In this study, the experimental conditions of the friction stir welding were determined by the two-way factorial design to evaluate the characteristics of the dissimilar friction stir welding of AZ31 and AZ61 magnesium alloys. The levels of rotation speed and welding speed, which are welding variables, were 1000, 2000, 3000 rpm and 100, 200, 300 mm/min, respectively. From the results, the greater the rotation speed and the lower the welding speed of the tool were, the greater the tensile strength of the welded part was. The contribution of the welding speed of the tool is larger than that of the rotation speed of the tool. In addition, the optimal conditions for tensile strength in the dissimilar friction stir joint were predicted to be the rotation speed of 3000 rpm and welding speed of 100 mm/min, and the tensile strength under the optimal conditions was estimated to be $214{\pm}6.57Mpa$ with 99% reliability.

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References

  1. Kim, J. D., Kim, K. H. and Yoon, M.. C., "Decision-Making Method of Priority Welding Process", Journal of The Korean Society of Manufacturing Process Engineers, Vol. 15, No. 5, pp. 39-47, 2016. https://doi.org/10.14775/ksmpe.2016.15.5.039
  2. James, M. N, Hattingh, D. G. and Bradley, G. R., "Weld Tool Travel Speed Effects on Fatigue Life of Friction Stir Welds in 5083Aluminum", International Journal of Fatigues, No. 25, pp. 1389-1398, 2003
  3. Kang, D. M., Park, K. D., Kang, J. Y., " Friction Stir Welding Characteristics of AZ31 Mg Alloy by Orthogonal Arrary", Journal of The Korean Society of Manufacturing Process Engineers, Vol. 11, No. 6, pp. 16-21, 2012.
  4. Lee, W. B., Yeon, Y. M., Shur, C. C., Jung, S. B., "Bonding of Magnesium Alloys by Friction Stir Welding", Journal of The Korean Welding and Joining Society, Vol. 19, No. 6, pp. 23-28, 2001.
  5. Park, H. S., Lee, Y. H., Choi, W. D., Ko, J. B., "A Study on the Effect that Pin Shape and Welding Speed have an Influence on Mechanical Strength in Friction Stir Welding Al6061-T6", Journal of The Korean Society of Manufacturing Technology Engineers, Vol. 17, No. 4. pp. 22-28, 8. 2008.
  6. Jang, S. K., Han, M. S., Jeon, J. I., "Effects of Tool Rotation and Transition Speed during Friction Stir Welding of Al 7075-T651 Alloy", Journal of The Korean Society of Mechanical Engineers(A), Vol. 11, No. 4, pp. 532-539, 2007.
  7. Richard Johnson, "Friction Stir Welding of Magnesium Alloys", 4th International Friction Stir Welding Symposium - Utah, USA, 14-16, May 2003.

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