| PROCESSING AND PROPERTY REGULATION OF ADVANCED NONFERROUS METAL MATERIAL |
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| Effect of Zr Content on Microstructure and Properties of 5083 Aluminum Alloy Cast-rolling Plate |
| LIU Zhu1, SUN Yuchong1, HOU Zhonglin1,2,*, XU Zhen1,*, LYU Zhe1, CHEN Qingqiang3
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1 College of Materials and Metallurgy, Liaoning University of Science and Technology, Anshan 114051, Liaoning, China
2 Provincial Key Laboratory of Metallurgical Equipment and Process Control, Liaoning University of Science and Technology, Anshan 114051, Liaoning, China
3 School of Mechanical and Electrical Engineering, Shandong Jianzhu University, Jinan 250101, China |
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Abstract In this work, 5083-xZr aluminum alloy cast-rolling plates with Zr content from 0wt% to 0.25wt% were prepared by vertical twin-roll casting mill. The microstructure of the edge and center of the cast-rolled sheet was observed and analyzed by optical microscope and scanning electron microscope. The corrosion resistance and room temperature tensile properties of the cast-rolling plate were tested by electrochemical workstation and electronic universal testing machine. The effects of Zr content on the microstructure and properties of 5083 aluminum alloy cast-rolled sheet were systematically studied. The results show that Zr has a significant refining effect on the grain of 5083 aluminum alloy cast-rolled sheet. With the increase of Zr content, the grain refinement effect is enhanced, the precipitated phase on the edge grain boundary is increased, the coarse eutectic phase in the center is improved, and the mechanical properties of the cast-rolled sheet are improved. When the Zr content is 0.25wt%, the corrosion resistance is better, the self-corrosion potential is -654.5 mV, and the corrosion current decays to 1.37×10-7A/cm2. At this time, the grain size of the edge of the plate is 46.87 μm, and the grain size of the center is 32.55 μm. The tensile strength, yield strength and elongation of the cast-rolling plate are 137.12 MPa, 98.37 MPa and 10.21%, respectively.
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Published: 10 August 2024
Online: 2024-08-29
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| Fund:National Natural Science Foundation of China (52104377), Key Laboratory of Process Control for Metallurgical Equipment (Science and Technology Department)(2023KFKT-03). |
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