镧铈稀土对Al-Si-Mg铸造铝合金性能影响研究

doi:10.3969/j.issn.2095-2198.2024.01.006

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摘要

以Al-Si-Mg铸造铝合金为研究对象，研究镧铈混合稀土及其成分含量对铸造铝合金Al-Si-Mg的显微组织和力学性能的影响，结果表明：加入镧、铈稀土后，铝合金组织对比普通的Al-Si-Mg铸造铝合金晶粒呈现明显细化状态，晶枝缩小；添加La、Ce稀土的Al-Si-Mg铝合金力学性能和硬度随稀土含量的增加而增大，但到一定程度后会下降，其中混合镧铈含量为0.1%（质量分数）时，铝合金力学性能最佳，可达到330 MPa的抗拉强度、HBW-93的硬度和4%的延伸率.

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关键词: 稀土铝合金镧铈混合稀土晶粒细化力学性能

Abstract:

Taking Al-Si-Mg casting aluminum alloy as the research object,the effects of lanthanum-cerium mixed rare earth and its component contents on the microstructure and mechanical properties of Al-Si-Mg cast aluminum alloy were investigated.The results showed the microstructure of aluminum alloy presented a significantly refined state of grain size compared to ordinary Al-Si-Mg cast aluminum alloy with lanthanum and cerium.The mechanical properties and hardness of Al-Si-Mg aluminum alloy improved with La and Ce rare earth added increased with the increase of rare earth content,but decreased to a certain extent.When the content of La and Ce is 0.1%(mass fraction),the mechanical properties of aluminum alloy are the best,and the tensile strength of 330 MPa,the hardness of HBW-93,and the elongation of 4% could be reached.

Key words: rare earth aluminum alloy')" href="#">

rare earth aluminum alloy lanthanum-cerium mixed rare earth grain refining mechanical properties

出版日期: 2024-02-29 发布日期: 2024-09-23 整期出版日期: 2024-02-29

ZTFLH:

TF845

基金资助:

辽宁省教育厅基本科研项目（LJKMZ20220799）；辽宁省教育厅基本科研项目（LJKZ0453）

作者简介: 张跃宏（1981—），女，河北承德人，讲师，博士，主要从事金属功能及结构材料的研究.

引用本文:

张跃宏, 张爽, 丁茯, 赵坤, 徐曼, 孙长亮.

镧铈稀土对Al-Si-Mg铸造铝合金性能影响研究 [J]. 沈阳化工大学学报, 2024, 38(1): 36-44.
ZHANG Yuehong, ZHANG Shuang, DING Fu, ZHAO Kun, XU Man, SUN Changliang.

Research on the Effect of Lanthanum Cerium Rare Earth on the Properties of Al-Si-Mg Cast Aluminum Alloy . Journal of Shenyang University of Chemical Technology, 2024, 38(1): 36-44.

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https://xuebao.syuct.edu.cn/CN/10.3969/j.issn.2095-2198.2024.01.006 或 https://xuebao.syuct.edu.cn/CN/Y2024/V38/I1/36

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