마찰교반용접한 5456-H116 알루미늄 합금 용접부 표면의 기계적 및 전기화학적 특성
Mechanical and Electrochemical Characteristics of Welding Parts Surface for Friction Stir Welded 5456-H116 Al Alloy
0
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
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.
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.
참고문헌 (10)
- 김성종, , 마린엔지니어링학회, 30, pp.14~ (2006)
- 김성종, "다양한 용접기술을 적용한 선박용 알루미늄합금의 기계적 특성 평가", 해양환경안전학회지, 13(3), pp.223~228 (2007), 해양환경안전학회
- 김성종, "Evaluation of the characteristics using slow strain rate tests of 5456 Al-Mg alloy for ship construction", The Korean Journal of Chemical Engineering, 23(6), pp.1028~1033 (2006), 한국화학공학회
- Min-Su Han, "Optimization of Corrosion Protection Potential for Stress Corrosion Cracking and Hydrogen Embrittlement of 5083-H112 Alloy in Seawater", Metals and Materials International, 14(2), pp.203~211 (2008), 대한금속·재료학회
- S.-K. Jang, "Proceeding of the Korean Society of Marine Engineers", pp.139~ (2004)
- S.-J. Kim, , Metals and Materials International, 8, pp.395~ (2002)
- S.-J. Kim, , Metals and Materials International, 8, pp.387~ (2002)
- S.-J. Kim, , The Korean Journal of Chemical Engineering, 20, pp.560~ (2003)
- S.-J. Kim, , Surface and coatings Technology, 169-170, pp.163~ (2003)
- 김성종, "Electrochemical Properties and Corrosion Protection of Stainless Steel for Hot Water Tank", The Korean Journal of Chemical Engineering, 21(3), pp.739~745 (2004), 한국화학공학회