Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)

The Korean Welding and Joining Society (대한용접접합학회)
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COLD CRACK SUSCEPTIBILITY OF HIGH STRENGTH WELD METAL

  • Kim, H. J. (Materials Reliability Center, KITECH) ;
  • B. Y. Kang (Materials Reliability Center, KITECH)
  • Published : 2002.10.01
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Abstract

This study reviews the factors controlling the weld metal cracking and shows the difference from those of HAZ cracking. It further reviews the recent progresses made in consumable design for improving the crack resistance in the high strength weld metal. Previously the controlling factors for weld metal cracking were regarded as weld metal strength, diffusible hydrogen and weld metal height. However an overall review presented in this article shows that the cold crack resistance can be improve significantly through the microstructural control and that an increase in tensile strength is not necessarily related to a decrease in the resistance to cold cracking.

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