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Metallic Materials Vol. 49 (2011), no. 3, pp.163-177

Title: Properties and processing of magnesium-tin-calcium alloys
Author: HORT, N., HUANG, Y. D., ABU LEIL, T., RAO, K. P., KAINER, K. U.
Abstract: The development of new creep resistant magnesium alloys has become a major issue in recent years and therefore further alloy development is necessary. Newly developed alloys are based on the binary system Mg-Sn. Sn as major alloying element was chosen due to its high solid solubility over a wide temperature range and due to the possible formation of Mg2Sn intermetallic precipitates with a high melting temperature of about 770 °C. These characteristics suggest that a fairly large volume fraction of thermally stable Mg2Sn particles can be formed during solidification. This makes it possible that the Mg-Sn alloys can be developed as creep resistant magnesium alloys and/or wrought magnesium alloys. Previous investigations indicate that the Mg-Sn alloys have a comparable or even better creep property than AE42 alloy. This paper presents an overview about recent works on the developments of Mg-Sn alloys performed in MagIC, Helmholtz-Zentrum Geesthacht Centre, which includes: microstructural characterization, creep deformation and hot deformation, and corrosion behaviour. Very positive results have been obtained and show Mg-Sn-Ca alloy systems can be developed for power train and hand tool applications.
Keywords: magnesium alloy, Mg-Sn, microstructure, creep, corrosion
Year: 2011, Volume: 49, Issue: 3 Page From: 163, Page To: 177
doi:10.4149/km_2011_3_163
Price: 7.50 €





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