| 冷却速率对Al-Cu二元合金凝固组织和性能的影响 |
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| 引用本文： | 王向杰,杨凌飞,谭宏娟,于芳,崔建忠.冷却速率对Al-Cu二元合金凝固组织和性能的影响[J].稀有金属材料与工程,2022,51(6):2033-2038. |
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| 作者姓名： | 王向杰 杨凌飞 谭宏娟 于芳 崔建忠 |
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| 作者单位： | 东北大学 材料电磁过程研究教育部重点实验室，辽宁 沈阳 110819;东北大学 材料先进制备技术教育部工程研究中心，辽宁 沈阳 110819,东北大学 材料电磁过程研究教育部重点实验室，辽宁 沈阳 110819;东北大学 材料先进制备技术教育部工程研究中心，辽宁 沈阳 110819,东北大学 材料电磁过程研究教育部重点实验室，辽宁 沈阳 110819;东北大学 材料先进制备技术教育部工程研究中心，辽宁 沈阳 110819,东北大学 材料电磁过程研究教育部重点实验室，辽宁 沈阳 110819;东北大学 材料先进制备技术教育部工程研究中心，辽宁 沈阳 110819,东北大学 材料电磁过程研究教育部重点实验室，辽宁 沈阳 110819;东北大学 材料先进制备技术教育部工程研究中心，辽宁 沈阳 110819 |
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| 基金项目： | the Fundamental Research Funds for the National Natural Science Foundation of China (U1708251); the Key Research and Development Program of Liaoning (2020JH2/10700003); Liaoning Revitalization Talents Program, China (XLYC1807027); the Fundamental Research Funds for the Central Universities (No. N2109004) |
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| 摘 要： | 为了研究冷却速率对Al-Cu二元合金凝固组织和性能的影响，通过楔形铜模铸造制备了Al-6%Cu合金铸锭。结果表明，当冷却速率从100 K/s降低到2 K/s时，铸锭晶粒形态的转变过程为：全部柱状晶→柱状晶与等轴晶混合→全部等轴晶。同时，靠近模壁处的柱状晶宽度从244.7 μm增加到408.2 μm，铸锭心部等轴晶的平均晶粒尺寸从629.8 μm减小到152.8 μm，并且平均枝晶臂间距从10.1 μm增加到52.8 μm。计算得出Al-6%Cu合金平均枝晶臂间距和冷却速率经验公式中的参数，其中A和n的值分别为78.75和0.41。当冷却速率从100 K/s降低到25 K/s时，共晶Al2Cu的形态从骨骼状变为片层状，在共晶Al2Cu附近的α-Al的形态呈蜂窝状。当冷却速率由2 K/s增加到100 K/s时，Al-6%Cu合金的硬度由618 MPa增加到726 MPa。
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| 关 键 词： | Al-Cu二元合金 楔形铜模铸造 凝固组织 冷却速率 性能 |
| 收稿时间： | 2021/5/5 0:00:00 |
| 修稿时间： | 2021/7/8 0:00:00 |
Effect of Cooling Rate on Solidification Microstructure and Properties of Al-Cu Binary Alloy |
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| Wang Xiangjie,Yang Lingfei,Tan Hongjuan,Yu Fang and Cui Jianzhong.Effect of Cooling Rate on Solidification Microstructure and Properties of Al-Cu Binary Alloy[J].Rare Metal Materials and Engineering,2022,51(6):2033-2038. |
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| Authors: | Wang Xiangjie Yang Lingfei Tan Hongjuan Yu Fang and Cui Jianzhong |
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| Affiliation: | Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China;Advanced Manufacturing Technology and Engineering Research Centers, Northeastern University, Shenyang 110819, China,Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China;Advanced Manufacturing Technology and Engineering Research Centers, Northeastern University, Shenyang 110819, China,Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China;Advanced Manufacturing Technology and Engineering Research Centers, Northeastern University, Shenyang 110819, China,Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China;Advanced Manufacturing Technology and Engineering Research Centers, Northeastern University, Shenyang 110819, China,Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China;Advanced Manufacturing Technology and Engineering Research Centers, Northeastern University, Shenyang 110819, China |
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| Abstract: | |
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| Keywords: | Al-Cu binary alloy wedge-shaped copper mode casting solidification microstructure cooling rate properties |
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