Regensburg 2004 – wissenschaftliches Programm
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M: Metallphysik
M 13: Mechanische Eigenschaften I
M 13.4: Vortrag
Dienstag, 9. März 2004, 11:00–11:15, H4
Fatigue properties of squeeze cast AZ31 — •Zuzana Zuberova1, Torbjørn Lamark1, Ralph J. Hellmig1, Ludvik Kunz2 und Juri Estrin1 — 1Institut für Werkstoffkunde und Werkstofftechnik, TU Clausthal, Agricolastr. 6, 38678 Clausthal-Zellerfeld — 2Academy of Sciences of the Czech Republic, Institute of Physics of Materials, Brno, Czech Republic
In this work we investigated the influence of loading frequencies on the fatigue life of squeeze cast AZ31 magnesium alloy. The density of AZ3–SC was determined to be 99,5 % of the theoretical value. The experiments were performed in the high cycle fatigue regime. The fatigue limit (for 10−7 cycles) for 20 Hz and 10 Hz was in the range of 40 – 45 MPa. Fatigue cracks were found to be initiated on the specimen surface. No porosity was detected at the crack initiation sites by optical and scanning electron microscopy.