| Microstructure,mechanical properties and deformation mechanisms of an Al-Mg alloy processed by the cyclical continuous expanded extrusion and drawing approach |
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| 作者姓名： | Ruiqing Lu Long Zhang Shuwei Zheng Dingfa Fu Jie Teng Jianchun Chen Guodong Zhao Fulin Jiang Hui Zhang |
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| 作者单位： | College of Materials Science and Engineering, Hunan University, Changsha 410082, China;Hunan Province Engineering Research Center for High Performance Super Long Scale Light Alloy Materials, Yueyang 414005, China;Hunan Jinlianxing Special Materials Co., Ltd., Yueyang 414005, China |
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| 基金项目： | This work was financially supported by the National Nat-ural Science Foundation of China(No.51774124);the Hun-an Provincial Natural Science Foundation of China(No.2019JJ40017);the Key Technologies R&D in Strategic Emerging Industries and Transformation in High-tech Achievements Program of Hunan Province,China(No.2019GK4045);the Graduate Training and Innovation Practice Base of Hunan Province,China. |
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| 摘 要： | Al-Mg alloys are an important class of non-heat treatable alloys in which Mg solute and grain size play essential role in their mechanical properties and plastic deformation behaviors.In this work,a cyclical continuous expanded extrusion and drawing(CCEED)process was proposed and implemented on an Al-3Mg alloy to introduce large plastic deformation.The results showed that the continuous expanded extrusion mainly improved the ductility,while the cold drawing enhanced the strength of the alloy.With the increased processing CCEED passes,the multi-pass cross shear deformation mechanism progressively improved the homogeneity of the hardness distributions and refined grain size.Continuous dynamic recrystallization played an important role in the grain refinement of the processed Al-3Mg alloy rods.Besides,the microstructural evolution was basically influenced by the special thermomechanical deformation conditions during the CCEED process.
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| 关 键 词： | Al-Mg alloy plastic processing MICROSTRUCTURE mechanical properties dynamic recrystallization |
Microstructure,mechanical properties and deformation mechanisms of an Al–Mg alloy processed by the cyclical continuous expanded extrusion and drawing approach |
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| Ruiqing Lu,Long Zhang,Shuwei Zheng,Dingfa Fu,Jie Teng,Jianchun Chen,Guodong Zhao,Fulin Jiang,Hui Zhang.Microstructure,mechanical properties and deformation mechanisms of an Al-Mg alloy processed by the cyclical continuous expanded extrusion and drawing approach[J].International Journal of Minerals,Metallurgy and Materials,2022,1(1):108-118. |
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| Authors: | Lu Ruiqing Zhang Long Zheng Shuwei Fu Dingfa Teng Jie Chen Jianchun Zhao Guodong Jiang Fulin Zhang Hui |
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| Abstract: | Al–Mg alloys are an important class of non-heat treatable alloys in which Mg solute and grain size play essential role in their mechanical properties and plastic deformation behaviors. In this work, a cyclical continuous expanded extrusion and drawing (CCEED) process was proposed and implemented on an Al–3Mg alloy to introduce large plastic deformation. The results showed that the continuous expanded extrusion mainly improved the ductility, while the cold drawing enhanced the strength of the alloy. With the increased processing CCEED passes, the multi-pass cross shear deformation mechanism progressively improved the homogeneity of the hardness distributions and refined grain size. Continuous dynamic recrystallization played an important role in the grain refinement of the processed Al–3Mg alloy rods. Besides, the microstructural evolution was basically influenced by the special thermomechanical deformation conditions during the CCEED process. |
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| Keywords: | Al–Mg alloy plastic processing microstructure mechanical properties dynamic recrystallization |
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