Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)

The Korean Welding and Joining Society (대한용접접합학회)
권호 표지

Fracture mode of friction spot joined Aluminum alloy used in automobile industry

마찰교반 점용접(FSJ)을 이용한 자동차용 Al 합금의 파단특성

  • 김특기 (포항산업과학연구원(RIST) 용접 센터) ;
  • 천창근 (포항산업과학연구원(RIST) 용접 센터) ;
  • ;
  • 김홍주 (포항산업과학연구원(RIST) 용접 센터) ;
  • 장웅성 (포항산업과학연구원(RIST) 용접 센터)
  • Published : 2007.11.15
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Abstract

Friction Spot Joining(FSJ) has a strong potential for aluminum alloy joining in automobile industries. The present paper focuses on the attempt to optimize the FSJ process for lap joining of A5052-H32 and A6061-T6 aluminum alloys. For A5052 maximum tensile shear strength has been observed for a tool rotating speed of 800rpm and for A6061 at 1000 rpm. Study on fracture modes of the tensile tested specimens of both A5052-H32 and A6061-T6 revealed, for high tensile strength values, plug fracture mode and lower tensile values, shear fracture mode. Above 2000 rpm distortion of the base metal, beside the tool shoulder was larger and plug fracture mode has been observed.

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