Influence of Extrusion Joint on Microstructural Evolution and Properties of Mg Alloy Sheet |
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| Authors: | Qing-Shan Yang Zu-Jian Yu Hu-Cheng Pan Qing-Wei Dai Jian-Hui Li |
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| Affiliation: | 1 .School of Metallurgy and Materials Engineering, Chongqing University of Science and Technology, Chongqing 401331,China2. Chongqing Academy of Science and Technology,Chongqing 401123, China3. Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern; |
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| Abstract: | 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 EJfree counterpart. Inhomogeneous microstructure distribution around EJ zone brings in the uncoordinated deformation due to the high density of f10"12g twins which were readily activated during plastic deformation. |
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| Keywords: | Mg alloy Microstructure Twin Texture Extrusion joint |
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