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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.

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Metadaten
Author: Ping Zhang, W. J. Ding, Janny Lindemann, Christoph Leyens
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
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