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MM: Metall- und Materialphysik

MM 17: Symposium Severe Plastic Deformation IV

MM 17.2: Vortrag

Dienstag, 28. März 2006, 15:15–15:30, IFW A

ECAP of magnesium alloys — •Mikhail V. Popov¹, Yuri Estrin¹, Ralph J. Hellmig¹, Lazar L. Rokhlin², and Sergey V. Dobatkin^2,3 — ¹Institut für Werkstoffkunde und Werkstofftechnik, Technische Universität Clausthal, Agricolastr. 6, 38678 Clausthal–Zellerfeld — ²Baikov Institute of Metallurgy and Materials Science, Leninsky pr. 49, 119991 Moscow, Russia — ³Moscow State Institute of Steels and Alloys (Technological University), Leninsk pr. 4, 119049 Moscow, Russia

The magnesium alloy MA17 (Mg-Ce-Mn) exhibits a high strength at a reasonable ductility making this alloy well suitable for structural applications. To further improve the mechanical properties, ECAP experiments at elevated temperatures (250^∘C) were carried out. For example, tensile tests at room temperature on specimens that had underwent 6 ECAP passes (route B_C) revealed a significant increase in yield strength. To substitute the expensive rare earth elements, a Mg-Ca-Al alloy was investigated as well. Results of the investigation of the mechanical properties at different temperatures for both alloys are discussed and compared.