Journal of Welding and Joining
- 제4권3호
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- Pages.58-71
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- 1986
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- 2466-2232(pISSN)
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- 2466-2100(eISSN)
이상계 스테인레스 강 용접부의 인성과 내식성 거동
Property differences between GTAW and SMAW duplex stainless steel weld metal
초록
Mechanical and corrosion property of duplex stainless steel weldments made by the GTAW and SMAW process were studied. Fracture toughness, general and local corrosion resistance of GTAW and SMAW weldments were evaluated in terms of Charpy V notch impact test, anodic polarization diagram, pitting corrosion rate, respectively. SMA weld metal showed much lower impact toughness and higher ductile-brittle transition temperature than GTA weld metal. Fractographic and EDX analysis on fracture surface of SMA weld metal demonstrated the existence of (Si, Ti), oxide in large amounts. Potentiodynamic anodic polarization diagram of GMA weld metal showed much lower passive current density than SMA weld metal in 4%
키워드