Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
권호 표지
DOI QR코드

DOI QR Code

The Effect of Al and Sn Additions on Corrosion Behavior of Permanent Mold Casting Magnesium Alloy

금형 주조한 마그네슘 합금의 부식 거동에 미치는 Al 및 Sn의 영향

  • Received : 2015.03.04
  • Accepted : 2015.04.27
  • Published : 2015.04.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, the influences of aluminum and tin additions (individual and combined) on corrosion behavior of magnesium alloy have been determined. The studied alloys were fabricated by permanent mold casting method to measure the corrosion properties, a potentiodynamic test, hydrogen evolution test and immersion test were carried out in a 3.5% NaCl solution at pH 7.2. From the results of microstructure analysis, the Mg-9Al-1Zn alloy was found to be composed of ${\alpha}$-Mg and rod-like $Mg_{17}Al_{12}$ phase and the Mg-5Sn-5Al-1Zn alloy was found to be composed of ${\alpha}$-Mg, rod-like $Mg_{17}Al_{12}$ and $Mg_2Sn$ phases. In the case of the Mg-9Sn-1Zn alloy, the microstructure was composed of ${\alpha}$-Mg and eutectic $Mg_2Sn$ phase. With Sn addition (individual and combined), the corrosion resistance of the Mg alloys improved.

Keywords

References

  1. M. Yang and F. Pan, Mater. Design, "Effects of Sn addition on as-cast microstructure, mechanical properties and casting fluidity of ZA84 magnesium alloy", 31 (2010) 68-75. https://doi.org/10.1016/j.matdes.2009.07.018
  2. Jo SM, Park KC, Park BH, H. Kimura, Park SK and Park YH, Mater. Trans., "Investigation on the microstructure and mechanical properties of Mg-Al-Yb alloys", 52 (2011) 1088-1095. https://doi.org/10.2320/matertrans.MC201011
  3. M. M. Avedesian, N. M. Inc. and H. Baker, Magnesium and Magnesium alloys, ASM International, USA, (1999) 3-6.
  4. Kim BH, Park KC, Park YH and Park IM, Mater. Sci. Eng. A, "Investigations of the properties of Mg-4Al-2Sn-1Ca-xCe alloys", 527 (2010) 6372-6377. https://doi.org/10.1016/j.msea.2010.06.055
  5. S. Wei, Y. Chen, Y. Tang, H. Liu, S. Xiao, G. Niu, X. Zhang and Y. Zhao, Mater. Sci. Eng. A, "Compressive creep behavior of as-cast and aging-treated Mg-5 wt% Sn alloys", 492 (2008) 20-23. https://doi.org/10.1016/j.msea.2008.05.006
  6. W. Xiao, S. Jia, J. Wang, J. Yang and L. Wang, Acta. Mater., "The influence of mischmetal and tin on the microstructure and mechanical properties of Mg-6Zn-5Al-based alloys", 56 (2008) 934-941. https://doi.org/10.1016/j.actamat.2007.10.042
  7. X. Zhang, Y. J. Li, K. Zhang and C. S. Wang, Trans. Nonferrous Met. Soc. China, "Corrosion and electrochemical behavior of MgY alloys in 3.5% NaCl solution", 23 (2013) 1226-1236. https://doi.org/10.1016/S1003-6326(13)62587-X
  8. Mingbo. Y and Fusheng. P, Mater. Sci. Eng. A, "Effects of Y addition on as-cast microstructure and mechanical properties of Mg-3Sn-2Ca (wt.%) magnesium alloy", 525 (2009) 112-120. https://doi.org/10.1016/j.msea.2009.06.040
  9. Kim JH, Cho DH and Park IM, J. Korea Foundry Society, "Effect of cerium on the microstructure and room temperature tensile properties of Mg-4Al-2Sn-1Si alloys", 32 (2012) 289-295. https://doi.org/10.7777/jkfs.2012.32.6.289
  10. H. E. Friedrich and B. L. Mordike, Magnesium Technology, Springer, Germany, (2006) 20.
  11. Kim BH, Park KC, Park YH and Park IM, Mater. Lett., "Effect of Pd on microstructures and tensile properties of ascast Mg-6Al-1Zn alloys", 65 (2011) 122-125. https://doi.org/10.1016/j.matlet.2010.09.035
  12. C. L. Mendis, C. J. Bettles, M. A. Gibson and C. R. Hutchinson, Mater. Sci. Eng. A, "An enhanced age hardening response in Mg-Sn based alloys containing Zn", 435-436 (2006) 163-171. https://doi.org/10.1016/j.msea.2006.07.090
  13. TANG S. Q, ZHOU J. X, TIAN C. W and YANG Y. S, Trans. Nonferrous Met. Soc. China, "Morphology modification of $Mg_2Si$ by Sr addition in Mg-4%Si alloy", 21 (2011) 1932-1936. https://doi.org/10.1016/S1003-6326(11)60952-7
  14. Kang YH, Kim SH, Jo SM, Kim BH, Park IM and Park YH, J. Korea Foundry Society, "Microstructure and corrosion behavior of Mg-xSn (x = 1, 3, 5, 7, 9 wt.%) Alloys", 31 (2011) 362-365. https://doi.org/10.7777/jkfs.2011.31.6.362
  15. Park KC, Park BH, H. Kimura, Park YH and Park IM, Mater. Trans., "Microstructure and corrosion properties of Mg-xSn-5Al-1Zn (x = 0, 1, 5 and 9 mass%) alloys", 51 (2010) 472-476. https://doi.org/10.2320/matertrans.M2009308
  16. Song. G and Atrens. A, Adv. Eng. Mater., "Understanding Magnesium Corrosion", 5 (2003) 837-858. https://doi.org/10.1002/adem.200310405
  17. Park KC, Kim BH, Jung JW, Cho DH and Park IM, J. Korea Foundry Society, "The Effect of Ce Addition on Corrosion Behavior of Permanent Mold Casting Mg-4Al-2Sn-1Ca alloy", 34 (2014) 187-193. https://doi.org/10.7777/jkfs.2014.34.6.187
  18. Song. G and Atrens. A, Adv. Eng. Mater., "Corrosion Mechanisms of Magnesium Alloys", 1 (1999) 11-33. https://doi.org/10.1002/(SICI)1527-2648(199909)1:1<11::AID-ADEM11>3.0.CO;2-N
  19. Zhao. MC, Liu. M, Song. G and Atrens. A, Corros. Sci., "Influence of the b-phase morphology on the corrosion of the Mg alloy AZ91", 50 (2008) 1939-1953. https://doi.org/10.1016/j.corsci.2008.04.010

Cited by

  1. Effect of Scrap Impurities on Microstructure and Mechanical Properties of Zr Alloys vol.36, pp.3, 2016, https://doi.org/10.7777/jkfs.2016.36.3.81