Effect of heat treatment on corrosion resistance of WE54 alloy

• Autorzy: Rzychoń T. , Michalska J. , Kiełbus A.
• Konferencja: 12th International Scientific Conference CAM3S'2006, 27-30th November 2006, Gliwice-Zakopane
• Języki publikacji: EN

Abstrakty

EN

Purpose: Poor corrosion resistance is one of the main causes to prevent magnesium alloys for wide applications. The addition of rare earth elements (RE) is an effective way to improve corrosion resistance of magnesium alloys. Heat treatment condition can also influence the corrosion behavior of magnesium alloys. The purpose of the investigation was to study the corrosion resistance of WE54 alloy after heat treatment. Design/methodology/approach: The study was conducted on WE54 alloy in the as-cast condition and after heat treatment at 250-300 degrees centigrade for periods of time 4-96 h. Immersion test was performed using not deaerated 3.5% NaCl solution at room temperature. Specimens were placed in 3.5% NaCl solution for periods of time between one and 7 days. The dissolution rates (mg cm-2 day-1) were determined by weight loss measurements. After immersion test, the microstructure and the appearances of the corroded structure were examined by scanning electron microscopy. Findings: The corrosion rate of WE54 alloy strongly depends on heat treatment condition. WE54 alloy in the as-cast and after solution treated have similar corrosion behavior, different from that of aged specimens. The curves of corrosion rate for aged specimens were higher than that for as-cast and solution treated conditions. It was also noticed that the longer time of ageing the higher corrosion rates were observed. Research limitations/implications: The knowledge about corrosion behavior of Mg-RE-Zr currently under evaluation on many speciality applications where lightweight connected with optimum corrosion resistance are required. Practical implications: The knowledge about corrosion behavior of Mg-RE-Zr alloys is currently under evaluation on many speciality applications where lightweight connected with optimum corrosion resistance are required. Originality/value: This paper includes the effect of heat treatment condition on corrosion resistance of WE54 magnesium alloy.

Słowa kluczowe

EN

metallic alloys; corrosion; heat treatment; WE54 alloy

PL

stopy metaliczne; korozja; obróbka cieplna; stop WE54

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 20, nr 1-2
• Strony: 191--194
• Opis fizyczny: Bibliogr. 17 poz., fot., rys., tab.

Twórcy

autor

Rzychoń T.

autor

Michalska J.

autor

Kiełbus A.

• Faculty of Materials Science and Metalurgy, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland,

Bibliografia

• [1] B.L. Mordike, Development of highly creep resistant magnesium alloys, Journal of Material Processing Technology, 117, (2001), 391-394.
• [2] Z. Xiaoquin, W. Quodong, L. Yizhen, Z. Yanping, D. Wenjiang, Z. Yunhu, Influence of beryllium and rare earth additions on ignition-proof magnesium alloys, Journal of Material Processing Technology, 112, (2001), 17-23.
• [3] H. Friedrich, S. Schumann, Research for a "new age of magnesium" in the automotive industry, Journal of Material Processing Technology, 117, (2001), 276-281.
• [4] N.A. El-Mahallawy, M.A. Taha, E. Pokora, F. Klein, On the influence of process variables on the thermal conditions and properties of high pressure die-cast magnesium alloys, Journal of Material Processing Technology, 73, (1998), 125-138.
• [5] K. Davey, S. Bounds, Modelling the Pressure Die Casting Process using Boundary and Finite Elements Methods, Journal of Material Processing Technology, 63 (1997), 696-700.
• [6] R.C. Zeng, J.Zhang, W.J.Huang, W. Dietzel, K.U. Kainer, C. Blawert, W. Ke, Review of studies on corrosion of magnesium alloys, Trans. Nonferrous Metal Society China, 16 (2006) 763-771.
• [7] F. Zucchi, V. Grassi, A. Frignani, C. Monticelli, G. Trabanelli, Electrochemical behaviour of a magnesium alloy сontaining rare earth elements, Journal of Applied Electrochemistry 36 (2006), 195-204.
• [8] G.L. Maker, J. Kruger, Corrosion of Magnesium, International Material Review, 38, 1993, 138-153.
• [9] G. Song, Recent progress in corrosion and protection of magnesium alloys, Advance Engineering Materials, 7(7) (2005), 563-586.
• [10] D. Eliezer, P. Uzan, E. Aghion, Effect of second phases on the corrosion behavior of magnesium alloy, Material Science Forum, 419, 2003, 857-866.
• [11] E. Ghali, W. Dietzel, K.U. Kainer, General and localized corrosion of magnesium alloys: a critical rewiev, Journal of Materials Engineering and Performance, 13(1), 2004, 7-23.
• [12] W. Unsworth, J.F. ing, Magnesium Technology (The Institute of Metals, London, 1987), 25.
• [13] B. Geary, in Proceedings ASM International Conference on Advanced Aluminium and Magnesium Alloys (Amsterdam, 20-22 June, ASM Europe, Brussels, 1990), 773-780.
• [14] I. Nakastugawa, S. Kamado, Y. Kojima, R. Ninomiya and K. Kubota, Corros. Rev. 16 (1998) 139.
• [15] T. Rzychoń, J. Michalska, A. Kiełbus, Corrosion resistance of Mg-RE-Zr alloys, in Proceedings of XXXIV School of Materials Science and Engineering, 2006, 413-418. (in Polish).
• [16] A. Kiełbus, Heat treatment of the WE54 magnesium alloy, in Proceedings of the 15th IFHTSE + SMT 20 Сonference, Wien, 2006, 310-316.
• [17] J.F. Nie, B.C. Muddle, Characterisation of strengthening precipitate phases in a Mg-Y-Nd alloy, Acta Materialia, 48, 2000, 1691-1703.