Influence of Extrusion Joint on Microstructural Evolution and Properties of Mg Alloy Sheet

The mechanical behaviour of AZ31 magnesium alloy sheet with the extrusion joint （EJ） was evaluated. Extruded joint of AZ31 alloy sheets was obtained by the hot extrusion process. Tensile tests were carried out along the extrusion direction at room temperature, and both the non-uniform plastic deform...

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Veröffentlicht in:	Acta metallurgica sinica : English letters 2016-05, Vol.29 (5), p.475-482
Hauptverfasser:	Yang, Qing-Shan, Yu, Zu-Jian, Pan, Hu-Cheng, Dai, Qing-Wei, Li, Jian-Hui
Format:	Artikel
Sprache:	eng
Schlagworte:	Alloys AZ31镁合金板材 Characterization and Evaluation of Materials Chemistry and Materials Science Corrosion and Coatings Deformation Fractures Grain boundaries Hot extrusion Magnesium base alloys Materials Science Mechanical properties Metal sheets Metallic Materials Microstructure Nanotechnology Organometallic Chemistry Plastic deformation Room temperature Scanning electron microscopy Spectroscopy/Spectrometry Tensile tests Tribology 力学性能塑性变形拉伸试验挤压接头挤压方向热挤压工艺组织演变
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Zusammenfassung:	The mechanical behaviour of AZ31 magnesium alloy sheet with the extrusion joint （EJ） was evaluated. Extruded joint of AZ31 alloy sheets was obtained by the hot extrusion process. Tensile tests were carried out along the extrusion direction at room temperature, and both the non-uniform plastic deformation and the fracture behaviour were studied. It is found that the samples with EJ present significantly deteriorated mechanical properties compared with the EJ- free counterpart. Inhomogeneous rnicrostructure distribution around EJ zone brings in the uncoordinated deformation due to the high density of {1012} twins which were readily activated during plastic deformation.
ISSN:	1006-7191 2194-1289
DOI:	10.1007/s40195-016-0411-4