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 Joining of Aluminum and Advanced High Strength Steel Using Friction Stir Hole Clinching

마찰교반 홀 클린칭을 이용한 알루미늄과 고장력강의 접합에 관한 연구

  • 고룡해 (부산대학교 일반대학원 융합학부) ;
  • 강길석 (부산대학교 일반대학원 융합학부) ;
  • 이경훈 (부산대학교 설계기반미래성형기술센터(ERC/ITAF)) ;
  • 김병민 (부산대학교 설계기반미래성형기술센터(ERC/ITAF)) ;
  • 고대철
  • Received : 2017.08.31
  • Accepted : 2017.10.26
  • Published : 2017.12.01
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Abstract

In recent years, dissimilar materials such as aluminum, magnesium, titanium, and advanced high strength steel are widely used in automotive body due to environment concerns and fuel consumption. Therefore, joining technology is important for assembling components made of dissimilar materials. In this study, friction stir hole clinching (FSHC) was proposed as a new mechanical joining method to join dissimilar materials. This process stirs and heats the upper sheet, forming mechanical interlocking with the lower sheet. The feasibility of this FSHC process was verified by comparing cross-section of joint in FSHC and hole clinching process under the same processing condition. Taguchi method was also applied to the FSHC process to estimate the effect of process parameters on joint strength and obtain optimal combination of process parameters. Joint strength of FSHC with optimal process condition was compared to that of FSHC with initial process condition as well as that of hole clinching with optimal process condition. Results showed that the FSHC process was useful for joining dissimilar materials, even if the formability of materials was low.

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References

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