Compression creep of short fibre reinforced magnesium alloy AE42
Hajo Dieringa, Norbert Hort, Karl Urlich Kainer GKSS Research Center, Institute for Materials Science, Center for Magnesium Technology, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany
Annals 3 No. 7, 2003 pages 275-278
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abstract Magnesium alloys are gaining increasing interest for automotive applications. Due to their low density and good specific strength cast parts are already in use, such as steering columns, steering wheels or fuel tank covers. Low creep properties at elevated temperatures are limiting applications at temperatures higher than 130°C. Magnesium based mmc’s show clearly decreasing creep rates compared to its matrix alloys. In the present paper a 20 vol.-% Saffil® short fibre reinforced AE42 magnesium alloy is investigated. Compression creep tests at 200°C with a load of 100 MPa were performed. Creep curves and microstructural changes in the matrix alloy as well as in the mmc are discussed. Key words: metal matrix composite, compression creep, Saffil® fibre, AE42, magnesium alloy