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
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
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.
通讯作者:
* 侯忠霖,辽宁科技大学材料与冶金学院副教授、硕士研究生导师。2004年大连理工大学材料成型及控制工程专业本科毕业,2007年大连理工大学材料加工工程专业硕士毕业,博士毕业于大连理工大学材料连接技术专业,然后到辽宁科技大学工作至今。目前主要从事激光-电弧复合焊接技术、计算机模拟技术等方面的研究工作。发表论文20余篇,包括Journal of Iron and Steel Research International、Journal of Manufacturing Processes、Materials Transactions等。dlut_kyo@sina.com.cn 徐振,辽宁科技大学材料与冶金学院副教授、硕士研究生导师。2003年东北大学材料成型及控制工程专业本科毕业,2012年东北大学材料加工工程专业硕士毕业,2015年博士毕业于东北大学材料加工工程专业,然后到辽宁科技大学工作至今。目前主要从事铝合金新材料强韧化体系设计、铝合金铸轧工艺研究等方面的工作。发表论文30余篇,包括Journal of Alloys and Compounds、Materials Characterization、Rare Metal Materials and Engineering等。ustlxuzhen@126.com
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2024, Vol. 38 
