Development of a Magnesium Recycling Alloy Based on AM50


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Magnesium applications for structural components in the automotive industry are constantly rising. This is based on the recent development of new alloys, new fabrication processes, and the ambition of car manufacturers to reduce the vehicles weight and CO2 emissions according to the EU and US policy [1, 2]. A rising quantity of magnesium per vehicle leads to a rising quantity of scrap which needs to be recycled according to the European Directive on end-of life vehicles [3]. So far post consumer scrap has not been used for structural parts. But since the metal is still expensive compared to aluminium or steel, and remelting saves more than 90 % of the energy for primary production, magnesium recycling will significantly contribute to cost savings. In comparison to steel or aluminium a recycling cycle for magnesium has not yet been established. Concerning post consumer scrap it is likely that many vehicles will end up in the shredder fraction or at least will be mixed up instead of being dismantled and separated according to their alloy. Thus it is reasonable to define secondary alloys which allow the use of post consumer scrap for structural applications. Creep resistant alloys have the potential of a broad application concerning the weight of the components and therefore a secondary alloy would be reasonable. The aim of this work is to examine a row of AM50-based alloys, modified with additions of Sr, Ca, and Si due to the importance of these elements to increase creep resistance and their usage in modern magnesium alloys. The corrosion properties as well as the mechanical properties and microstructures are investigated in the as-cast and annealed condition. Salt spray tests (using 5 % NaCl) and electrochemical corrosion methods are applied to investigate the corrosion properties which are then compared to the unmodified AM50. Tensile and compression tests at temperatures ranging from 20 °C to 200 °C are applied to investigate the mechanical properties.



Materials Science Forum (Volumes 539-543)

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Edited by:

T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran




D. Fechner et al., "Development of a Magnesium Recycling Alloy Based on AM50", Materials Science Forum, Vols. 539-543, pp. 108-113, 2007

Online since:

March 2007




[1] Communications from the Commission to the Council and the European Parliament: Implementing the Community Strategy to Reduce CO2 Emissions from Cars: Third annual report on the effectiveness of the strategy (Reporting year 2001), COM (2002) 693.

[2] CAFE, http: /www. nhtsa. dot. gov.

[3] European parliament: Official Journal of the European Communities, October (2000), pp.34-42.

[4] A. Ditze: ALUMINIUM 75. (1999), pp.157-160.

[5] G. Hanko, C. Lochbichler, W. Riederer, and G. Macher: Magnesium, proceedings of the 6th International Conference Magnesium Alloys and Their Applications, edited by K.U. Kainer (2004), pp.980-987.

DOI: 10.1002/3527603565.ch153

[6] Hong Tao Gao, Guo Hua Wu, Wen Jiang Ding, Yan Ping Zhu: Journal of Materials Science, Vol. 39 (2004), pp.6449-6456.

DOI: 10.1023/b:jmsc.0000044882.39325.09

[7] G. Hanko and G. Macher: Magnesium Technology 2003, edited by H.I. Kaplan, TMS, pp.29-32.

[8] Koichi Kimura, Kouta Nishii and Motonobu Kwarada: Materials Transactions, Vol. 43, No. 10 (2002), pp.2516-2522.

[9] Y. Chino, A. Yamamoto, H. Iwasaki, M. Mabuchi and H. Tsubakino: Materials Science Forum, Vol. 419-422. (2003), pp.671-676.

DOI: 10.4028/

[10] Makoto Inoue, Masao Iwai, Shigeharu Kamado, Yo Kojima, Tadao Itoh and Mitsuo Sugama: Transactions of the Materials Research Society Japan, 24.

[3] (1999), pp.349-352.

[11] J.F. King, A. Hopkins and S. Thistlethwaite: Proceedings of the 3rd International Magnesium Conference (1996), edited by G. W. Lorimer, pp.51-61.

[12] G. Shalev, N. Moscovitch, B. Bronfin, Z. Rubinovich and E. Aghion: 12th Magnesium Automotive and End User Seminar, 13-14th September (2004).

[13] D. Argo, P. Forakis and M. Lefebvre: Magnesium Technology 2003, edited by H.I. Kaplan, TMS, pp.33-37.

[14] C. Scharf, C. Blawert and A. Ditze: Mgnesium, poceedings of the 6th International Conference Magnesium Alloys and Their Applications, edited by K.U. Kainer (2004), pp.988-994.

[15] A. Ditze, K. Schwertfeger, C. Scharf and C. -T. Mutale: Materialwissenschaft u. Werkstofftechnik, Vol. 32 (2001), pp.31-35.

[16] ASTM, Designation B 661-93.

[17] DIN50125 (1991).

[18] EN 10002 (1991).

[19] V. Kree, J. Bohlen, D. Letzig, K.U. Kainer: Practical Metallography, 41 (5) (2004), pp.233-246.

[20] ASTM, Designation B199-87 (Reapproved 1993).

[21] M.O. Pekguleryuz and E. Baril: Magnesium Technology 2001, edited by J. Hryn, TMS, pp.119-125.

[22] Keun Yong Sohn, J. Wayne Jones and John E. Allison: Magnesium Technology 2000, Edited by H.I. Kaplan, J. Hryn and B. Clow, TMS, pp.271-278.

[23] M. Pekuleryuz. P. Labelle, D. Argo and E. Baril: Magnesium Technology 2003, edited by H.I. Kaplan, TMS, pp.201-206.

[24] ASTM, Designation B94-94.

[25] A. Fischersworring-Bunk, C. Landerl, A. Fent and J. Wolf: Proceedings of 62nd IMA (2005), pp.51-60.

[26] M.S. Dargusch, A.L. Bowles, K. Pettersen, P. Bakke and G.L. Dunlop: Metallurgical and Materials Transactions A., Vol. 35A, June (2004), p.1905-(1909).

[27] E. Baril, P. Labelle and M.O. Pekguleryuz: Journal of Metals, November (2003), pp.34-39.

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