Journal of Welding and Joining

  • 제27권2호
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  • Pages.27-31
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  • 2009
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  • 2466-2232(pISSN)
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  • 2466-2100(eISSN)
대한용접접합학회 (The Korean Welding and Joining Society)
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페라이트계 스테인리스 강 MAG 용접의 기계적 물성에 관한 연구

A Study on the Mechanical Properties of MAG Weld on Ferritic Stainless Steel Sheets

  • 이경철 (한국항공대학교 항공우주 및 기계공학과) ;
  • 김재성 (한국항공대학교 항공우주 및 기계공학과) ;
  • 김현재 (한국항공대학교 항공우주 및 기계공학과) ;
  • 임경호 (한국항공대학교 항공우주 및 기계공학부) ;
  • 이보영 (한국항공대학교 항공우주 및 기계공학부)
  • Lee, Gyeong-Cheol (Dept. of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Jae-Seong (Dept. of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Hyun-Jae (Dept. of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Lim, Kyoung-Ho (Dept. of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Lee, Bo-Young (Dept. of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • 발행 : 2009.04.30
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초록

Ferritic stainless steels have a good heat resistance and economic advantage. They are used for applications such as automotive exhaust systems where resistance to general corrosion is superior to carbon steels. However, there are not enough research for ferritic stainless steels on weldability mainly used as automotive exhaust manifolds. In this study, mechanical and microstructure properties of as-welded STS 429L and STS 444 ferrite stainless steels were confirmed by tensile, bending, hardness test, optical microscopy and scanning electron microscopy. Tensile strength of the STS 444 is higher than the STS 429L when it is a raw material. In contrast to this fact, STS 429L indicated higher tensile strength after butt welded. In addition, the hardness have a increasing tendency as getting down on the bead.

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참고문헌

  1. JFE 21st. Century Foundation: Stabilized Rust and Corrosion Resistance Materials for Automobile Exhaust Systems, Chapter 1-E(2), An Introductions to Iron and Steel Processing, JFE. 2003
  2. N.Fujita, K. Ohmura, A. Yamamoto: Changes of microstructures and high temperature properties during high temperature service of Niobium added ferritic stainless steels, Volume 351, Materials Science and Engineering A. 2003
  3. J.S. Kim, H.C. Kim, C.S. Jeon: Development of High Performance Gasoline Engine for Small & Middle Car, KSAE 2006 spring, 112-117
  4. S.S. Kim, J.H. Lee, D.W. Kim: Development of Heat Resisting Austenitic Cast Alloy for Gasoline Engine Exhaust Manifold, KSAE 2006 spring, 1879-1885
  5. John C. Lippold and Damian J. Kotecki : Welding Metallurgy and Weldability of stainless steels, John Wiley & Sons, Inc. 2005, 88-92
  6. KSJC : KS B 0833 Fusion - welded butt joints in steel - Tranverse tensile test. 2001
  7. Robert D. Cook & Warren C. Young : Advanced Mechanics of Materials, Macmillan Publishing Company, 1985
  8. H. Ktafft : Alloy 430 Ferritic stainless steel Welds Fail Due to Stress-Corrosion Cracking in Heat-Recovery Steam Generator, Springer Boston, 2007
  9. Li C and H.S. Jeong : Weldability of type 444 ferritic stainless steel GTA welds, International KWS Journal 3-1 (2003), 29-33