Korean Journal of Chemical Engineering

The Korean Institute of Chemical Engineers (한국화학공학회)
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Evaluation of the characteristics using slow strain rate tests of 5456 Al-Mg alloy for ship construction

  • Kim, Seong-Jong ;
  • Ko, Jae-Yong ;
  • Han, Min-Su
  • 김성종 (목포해양대학교) ;
  • 고재용 (목포해양대학교) ;
  • 한민수 (목포해양대학교)
  • Published : 20060000
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Abstract

there has been increased interest in using aluminum alloys in ship construction instead of fiber-FRP ships. We investigated the mechanical and electrochemical properties of aluminum alloys using slow strain rateand potentiostatic tests under various potential conditions. Aluminum and aluminum alloys do not corrode due to theformation of an anti-corrosive passive film, such as Al2O3 or Al2O3·3H2O, which resists corrosion in neutral solutions. Inseawater, however, Cl ions destroy this passive film. The optimum protection potential range with regards to hydrogenembrittlement and stress corrosion cracking was determined to lie between 1.5 and 0.7 V (SSCE). These resultscan be used as reference data for ship design.

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References

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