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JWJ > Volume 31(5); 2013 > Article
Journal of KWJS 2013 October;31(5) :64-70.
Published online November 5, 2013.
doi:https://doi.org/10.5781/KWJS.2013.31.5.64
Weldability of SUS304 and Ti Dissimilar Welds with Various Welding Speed using Single Mode Fiber Laser
Su-Jin Lee1, Seiji Katayama1, Jong-Do Kim2
1Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Ibaraki, Osaka 567-0047, JAPAN
2Division of Marine Engineering, Korea Maritime and Ocean University, Busan 606-791, KOREA
Correspondence: Jong-Do Kim  Email: jdkim@kmou.ac.kr
  Published online November 5, 2013
ABSTRACT
The joining of Ti and SUS304 dissimilar metals is one of the effective measures to save rare metal. But Ti and SUS304 have differences in materials properties, and Ti and Fe intermetallic compounds such as TiFe and TiFe2 are easily formed in weld fusion zone between Ti and SUS304. Nevertheless, in this study, full penetration lap dissimilar welding of Ti and SUS304 using single-mode fiber laser with ultrahigh welding speed was tried, and it was found out that ultra-high welding speed could control the generation of intermetallic compound. To recognize the formation of intermetallic phase in the weld fusion zone and the compound zone of interface weld area were observed and analyzed using energy dispersive X-ray spectroscopy (EDX). And it was confirmed that the ultra-high welding speed could reduce amount of intermetallic compounds, but the intermetallic compounds were existed in the weld fusion zone under the all conditions.
Keywords: Intermetallic compound | Ti | SUS304 | Dissimilar welding | Single mode fiber las
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