Insights into microstructure based corrosion mechanism of high pressure die cast AM50 alloy

Corrosion Science

Volumn 60, Issue , 2012, Pages 18-31

  Sachdeva, Deepika ^a  

^a GENERAL MOTORS CORPORATION   (United States)

Author keywords

A. Magnesium; B. EIS; B. IR spectroscopy; B. SEM

Indexed keywords

ALLOY SURFACES; ALPHA PHASE; AM50 ALLOY; B. EIS; COMPARATIVE STUDIES; CORROSION MECHANISMS; DIE-CAST ALLOYS; ELEMENTAL COMPOSITIONS; EUTECTIC PHASIS; HIGH PRESSURE DIE CASTS; NACL SOLUTION; PLANAR MICROSTRUCTURES; SELECTIVE DISSOLUTION; SUPERIOR CORROSION;

ALLOYS; ALUMINUM; CORROSION RESISTANCE; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; MAGNESIUM; MAGNESIUM ALLOYS; MICROSTRUCTURE; SODIUM CHLORIDE;

CERIUM ALLOYS;

EID: 84861196054     PISSN: 0010938X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.corsci.2012.04.016     Document Type: Article

References (37)

1. W.K. Miller, E.F. Ryntz Jr., A report on Magnesium for Automotive Applications: A State-of-the-Art Assessment, Society of Automotive Engineers, Inc., 1984, pp. 2.524-2.552.
2. Ambat R., Aung Naing Naing, Zhou W. Evaluation of microstructural effects on corrosion behaviour of AZ91D magnesium alloy. Corros. Sci. 2000, 42:1433-1455.
3. Wang L., Zhang Bo-Ping, Shinohara Tadashi Corrosion behaviour of AZ91 magnesium alloy in dilute NaCl solutions. Mater. Des. 2010, 31:857-863.
4. Mathieu S., Rapin C., Steinmetz J., Steinmetz P. A corrosion study of the main constituent phases of AZ91 magnesium alloys. Corros. Sci. 2003, 45:2741-2755A.
5. Ballerini G., Bardi U., Bignucolo R., Ceraolo G. About some corrosion mechanisms of AZ91D magnesium alloy. Corros. Sci. 2005, 47:2173-2184.
6. Song G., Atrens A., Dargusch M. Influence of microstructure on the corrosion of diecast AZ91D. Corros. Sci. 1999, 41:249-273.
7. Zhang T., Li Y., Wang F. Roles of β phase in the corrosion process of AZ91D magnesium alloy. Corros. Sci. 2006, 48:1249-1264.
8. Wu G., Fan Y., Atrens A., Zhai C., Ding W. Electrochemical behaviour of magnesium alloys AZ91D, AZCe2, and AZLa1 in chloride and sulfate solutions. J. Appl. Electrochem. 2008, 38:251-257.
9. Prosek T., Nazarov A., Bexell U., Thierry D., Serak J. Corrosion mechanism of model zinc-magnesium alloys in atmospheric conditions. Corros. Sci. 2008, 50:2216-2231.
10. 12 phase in the corrosion of Mg alloy AZ91. Corrosion 1989, 45(9):741-748.
11. Zhao M., Liu M., Song G., Atrens A. Influence of the β-phase morphology on the corrosion of the Mg alloy AZ91. Corros. Sci. 2008, 50:1939-1953.
12. Song Y.L., Liu Y.H., Wang S.H., Yu S.R., Zhu X.Y. Effect of cerium addition on microstructure and corrosion resistance of die cast AZ91 magnesium alloy. Mater. Corros. 2007, 58:189-192.
13. Ma Y., Zhang J., Yang M. Research on microstructure and alloy phases of AM50 magnesium alloy. J. Alloys Compd. 2009, 470:515-521.
14. Pardo A., Merino M.C., Coy A.E., Arrabal R., Viejo F., Matykina E. Corrosion behaviour of magnesium/aluminium alloys in 3.5wt.% NaCl. Corros. Sci. 2008, 50:823-834.
15. Jönsson M., Persson D. The influence of the microstructure on the atmospheric corrosion behaviour of magnesium alloys AZ91D and AM50. Corros. Sci. 2010, 52:1077-1085.
16. Pardo A., Merino M.C., Coy A.E., Viejo F., Arrabal R., Feliú S. Influence of microstructure and composition on the corrosion behaviour of Mg/Al alloys in chloride media. Electrochim. Acta 2008, 53:7890-7902.
17. Standard Practice for Preparing, Cleaning and Evaluating Corrosion Test Specimens. ASTM International Standard G 1-03.
18. Song G., Atrens A. Understanding Mg corrosion, A framework for improved alloy performance. Adv. Eng. Mater. 2003, 5:837-858.
19. Song G. Recent progress in corrosion and protection of magnesium alloys. Adv. Eng. Mater. 2005, 7:563-586.
20. Song G., Atrens A. Corrosion mechanisms of magnesium alloys. Adv. Eng. Mater. 1999, 1:11-33.
21. Song G., Atrens A. Recent insights into the mechanism of magnesium corrosion and research suggestions. Adv. Eng. Mater. 2007, 9:177-183.
22. H. Baker, ASM Handbook Volume 3 - Alloy Phase Diagrams, 2.48, 1992, Ohio, USA, ASM International.
23. Orazem M.E., Tribollet B. Electrochemical Impedance Spectroscopy 2008, John Wiley & Sons, Inc, New Jersey, USA, p. 70.
24. Jönsson M., Persson D., Theirry D. Corrosion product formation during NaCl induced atmospheric corrosion of magnesium alloy AZ91D. Corros. Sci. 2007, 49:1540-1558.
25. Chen J., Wang J., Han E., Dong J., Ke W. AC impedance spectroscopy study of the corrosion behaviour of an AZ91 magnesium alloy in 0.1M sodium sulphate solution. Electrochim. Acta 2007, 52:3299-3309.
26. Zhu Y.F., Lu H.M., Jiang Q., Mimura K., Isshiki M. Effect of alloying Mg on corrosion resistance of Cu at high temperature. J. Electrochem. Soc. 2007, 154(3):C153-C158.
27. 1.92 in alkaline solution and its breakdown. Corros. Eng., Sci. Technol. 2009, 44:280-288.
28. Aoki I.V., Bernard M.-C., Cordoba de Torresi S.I., Deslouis C., de Melo H.G., Joiret S., Tribollet B. Electrochim. Acta 2001, 46:1871-1878.
29. Harrington D.A., van den Driessche P. Stability and electrochemical impedance of mechanisms with a single adsorbed species. J. Electroanal. Chem. 2001, 501:222-234.
30. Bai L., Conway B.E. AC impedance of faradaic reactions involving electrosorbed intermediates: examination of conditions leading to pseudoinductive behaviour represented in three-dimensional impedance spectroscopy diagrams. J. Electrochem. Soc. 1991, 138:2897-2907.
31. Tait W.S. An Introduction to Electrochemical Corrosion Testing for Practicing Engineers and Scientists 1994, Pair O Docs Publications, Racine, WI, p. 85.
32. Aghion E., Lulu N. The effect of skin characteristics on the environmental behaviour of die cast AZ91 magnesium alloy. J. Mater. Sci. 2009, 44:4279-4285.
33. Pourbaix M. Atlas of Electrochemical Equilibria in Aqueous Solution 1974, NACE International, Houston, USA.
34. Stansbury E.E., Buchanan R.A. Fundamental of Electrochemical Corrosion 2000, ASM International, Ohio.
35. Taheri M., Phillips R.C., Kish J.R., Botton G.A. Analysis of the surface film formed on Mg by exposure to water using a FIB cross-section and STEM-EDS. Corros. Sci. 2012, 59:222-228.
36. M. Jönsson, Doctoral Thesis in Corrosion Science on "Atmospheric Corrosion of Magnesium Alloys - Influence of Microstructure and Environment", KTH Chemical Science and Engineering, Stockholm, Sweden.
37. Jia R., Yan C., Wang F. Influence of Al content on the atmospheric corrosion behaviour of magnesium-aluminum alloys. J. Mater. Sci. Technol. 2009, 25:225-229.