Mechanical properties of the hot-rolled Mg-12Gd-3Y magnesium alloy
- Tensile and high cycle fatigue (HCF) properties of the hot-rolled Mg-12Gd-3Y (wt.%) magnesium alloyhave been investigated. The magnesium alloy exhibits a fatigue strength of about 150 MPa, which ismuch higher than that of the commercial Mg-8Al-Zn alloy AZ80. Aging heat-treatment (T5) improvedthe fatigue life of the Mg-12Gd-3Y alloy. Fatigue cracks nucleated at the intense slip bands in theas-rolled alloy. After T5 treatment, however, the fatigue crack nucleation site shifted to the phase boundariesbetween MgGdY particles and Mg matrix. T5 heat-treatment retarded the crack initiation and thusimproved the fatigue life of the Mg-12Gd-3Y alloy.
Author: | Ping Zhang, W. J. Ding, Janny Lindemann, Christoph Leyens |
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Document Type: | Scientific journal article peer-reviewed |
Language: | German |
Year of publication: | 2009 |
Tag: | Aging heat treatment; Fatigue; Magnesium alloys; Mechanical properties; Tensile |
Quelle aus UBICO: | Materials Chemistry and Physics 118(2009)2-3, S. 453-458, 0254-0584 |
Faculty/Chair: | Fakultät 3 Maschinenbau, Elektro- und Energiesysteme / FG Metallkunde und Werkstofftechnik |
Institution name at the time of publication: | Fakultät für Maschinenbau, Elektrotechnik und Wirtschaftsingenieurwesen (eBTU) / LS Metallkunde und Werkstofftechnik |