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Mechanical and Electrochemical Characteristics of Welding Parts Surface for Friction Stir Welded 5456-H116 Al Alloy
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 Title & Authors
Mechanical and Electrochemical Characteristics of Welding Parts Surface for Friction Stir Welded 5456-H116 Al Alloy
Jang, Seok-Ki; Kim, Seong-Jong;
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 Abstract
Small FRP(fiber-reinforced polymer) fishing ships have numerous problems with the point of the environmental and recycling perspectives. In light of these aspects, aluminum can be used as a material for ship building. It is environmental friendly, easy to recycle, and provides a high added value to fishing boats. In this paper, we report on mechanical and electrochemical characteristics of welding parts for friction stir welded 5456-H116 Al alloy. In friction stir welded at various traveling speeds under the rotation speed of 500 RPM, the best characteristics presented in traveling speed of 15mm/min. The anodic polarizations of base metal and welding metal were observed tendency which current density from the open circuit potential suddenly increase. The cathodic polarization presented concentrated polarization caused by the dissolved oxygen reduction reaction and activation polarization caused by hydrogen generation. From result of Tafel analysis, the corrosion potential of 5456 alloy(Base metal) was lower than that of friction stir welded part, as were its corrosion current densities.
 Keywords
FRP;Al alloy;Friction stir welding;Traveling speed;
 Language
Korean
 Cited by
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