Small crack initiation and early propagation in an as-extruded Mg-10Gd-3Y-0.5Zr alloy in high cycle fatigue regime

High cycle fatigue testing was performed on an as-extruded Mg-10Gd-3Y-0.5Zr alloy to investigate its fatigue crack initiation and early propagation behaviors. Experimental results showed that only basal slip was activated at a low cyclic stress amplitude. Fatigue crack initiated from the slip bands...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2019-01, Vol.744, p.716-723
Hauptverfasser:	He, Chao, Shao, Xiaohong, Yuan, Shucheng, Peng, Liming, Wu, Yujuan, Wang, Qingyuan, Chen, Qiang
Format:	Artikel
Sprache:	eng
Schlagworte:	Basal plane Basal slip Crack initiation Crack propagation Deformation Edge dislocations Extrusion Fatigue crack initiation Fatigue failure Fatigue tests Fracture mechanics Fracture surfaces Grains High cycle fatigue Magnesium base alloys Metal fatigue Mg-Gd-Y-Zr alloy Propagation
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