Effect of 1.5 wt% tin addition on the properties of AZ31 magnesium alloy: Einfluss der Zugabe von 1,5 Gew.% Zinn auf die Eigenschaften einer AZ31 Magnesium Legierung

Abstract In this paper, 1.5 wt%Sn was added to the AZ31 magnesium alloy aiming at improving the mechanical properties by using a low cost alloying element. Both alloys were prepared in the cast/heat treated (HT), rolled at 350 °C, rolled/heat treated at 400 °C and extruded at 350 °C. The results ind...

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Bibliographic Details
Published in:Materialwissenschaft und Werkstofftechnik 2017-06, Vol.48 (6), p.519-528
Main Authors: Mahallawy, N. El, Akdesir, M., Palkowski, H.
Format: Article
Language:English
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Summary:Abstract In this paper, 1.5 wt%Sn was added to the AZ31 magnesium alloy aiming at improving the mechanical properties by using a low cost alloying element. Both alloys were prepared in the cast/heat treated (HT), rolled at 350 °C, rolled/heat treated at 400 °C and extruded at 350 °C. The results indicate that with addition of tin an improvement was obtained in both tensile strength and ductility of the AZ31 alloy in the cast/heat treated and in the extruded conditions. The yield and ultimate tensile strengths reached 98 MPa and 224 MPa respectively with 14 % elongation in the cast/heat treated condition while in the extruded condition these values were 212 MPa and 286 MPa with 20 % elongation. The tensile strength was even higher after rolling reaching 315 MPa for AZ31 with tin addition; however, as the material temperature during the last passes has decreased to relatively low values, the % elongation decreased to 1 %. After heat treatment at 400 °C for 2 hours the % elongation was restored and reached 12 %; this was accompanied by a decrease in tensile strength which reached 276 MPa. The results are discussed in relation to the microstructure evolution including grain size, phase identification, and volume fraction of phases.
ISSN:0933-5137
1521-4052
DOI:10.1002/mawe.201600710