스크랩 장입 비율에 따른 다이캐스팅용 알루미늄 합금의 부식 특성
Corrosion Characteristics of Aluminum Die Casting Alloys with Different Scrap Charge Rate
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The utilization of aluminum scrap is a subject of great importance in terms of reducing energy consumption and environmental protection. However, aluminum scrap contains impurities, which can degrade the properties of aluminum alloy, especially corrosion resistance. This study examines the effect of scrap charge rate of aluminum alloys about microstructures and corrosion characteristics. According to the metallographic examinations, Mg2Si tended to become coarser and its uniformity was decreased by increasing aluminum scrap charge rate. The immersion test exhibited corrosion progressed through the eutectic areas due to micro-galvanic interactions. Electrochemical measurements revealed that excess aluminum scrap could reduce the intergranular corrosion resistance of aluminum alloys. Results showed that the scrap charge rate is important factor in the design of corrosion resistance of aluminum die casting alloys.
Abstract
The utilization of aluminum scrap is a subject of great importance in terms of reducing energy consumption and environmental protection. However, aluminum scrap contains impurities, which can degrade the properties of aluminum alloy, especially corrosion resistance. This study examines the effect of scrap charge rate of aluminum alloys about microstructures and corrosion characteristics. According to the metallographic examinations, Mg2Si tended to become coarser and its uniformity was decreased by increasing aluminum scrap charge rate. The immersion test exhibited corrosion progressed through the eutectic areas due to micro-galvanic interactions. Electrochemical measurements revealed that excess aluminum scrap could reduce the intergranular corrosion resistance of aluminum alloys. Results showed that the scrap charge rate is important factor in the design of corrosion resistance of aluminum die casting alloys.
참고문헌 (15)
- 국회예산정책처, "지속성장을 위한 기후변화대응전략", pp.5~22 (2020)
- 세계 에너지시장 인사이트, 제19-23호, "에너지경제연구원", 3~14 (2019)
- Vargel, C., "Corrosion of aluminium" (2020), Elsevier
- 모세준, "자동차 경량소재 개발 동향 및 완성차업체 대응", 자동차경제, 459, pp.41~53 (2013)
- Frankel, G. S., "Pitting Corrosion of Metals: A Review of the Critical Factors", J. Electrochem. Soc., 145, pp.2186~2198 (1998)
- 조재익, "Al-Mg계 다이캐스팅 합금의 미세조직 및 기계적 성질에 미치는 Mg 및 Si의 영향", 한국주조공학회지, 32(5), pp.219~224 (2012), 한국주조공학회[DOI]
- Wagiman, A., "A review on direct hot extrusion technique in recycling of aluminium chips", Int J Adv Manuf Technol, 106, pp.641~653 (2020)
- Soo, V. K., "Sustainable aluminium recycling of end-of-life products: A joining techniques perspective", Journal of Cleaner Production, 178, pp.119~132 (2018)
- Liang, W. J., "General aspects related to the corrosion of 6xxx series aluminium alloys:Exploring the influence of Mg", Si ratio and Cu, 2013, pp.76, 119~128
- Ahlatci, H., "Production and corrosion behaviours of the Al–12Si–XMg alloys containing in situ Mg2Si particles", Journal of Alloys and Compounds, 503(1), pp.122~126 (2010)
- Jones, D. A., "Principles and prevention of corrosion" (1992), Macmillan
- Arrabal, R., "Pitting corrosion of rheocast A356 aluminium alloy in 3.5 wt.% NaCl solution", Corrosion Science, 73, pp.342~355 (2013)
- Choi, I. K, "Improved corrosion resistance of 5xxx aluminum alloy by homogenization heat treatment", Coatings, 8(1), pp.39~ (2018)
- Xuehong, X., "Effect of interrupted ageing treatment on the mechanical properties and intergranular corrosion behavior of Al-Mg-Si alloys", Journal of Materials Research and Technology, 9(1), pp.230~241 (2020)
- Escalera-Lozan, R., "The role of Mg2Si in the corrosion behavior of Al-Si-Mg alloys for pressureless infiltration", The Open Corrosion Journal, 3(1), pp.73~79 (2010)