Effect of Solutionization and Deformation on Microstructural Evolution and Mechanical/Electrical Properties of Al-Mg-Si Alloy with Er plus Sc Co-Addition

被引：0
作者：
Chen, Bao-an [1 ,2 ]
Chen, Rui [1 ,2 ]
Li, Menglin [1 ,2 ]
Wang, Ruihong [3 ]
Han, Yu [1 ,2 ]
Zhu, Zhixiang [1 ,2 ]
Dong, Jianhua [3 ]
Huang, Yiting [3 ]
Yang, Changlong [4 ]
Jiang, Shengyu [3 ]
机构：
[1] State Grid Smart Grid Res Inst Co LTD, State Key Lab Adv Power Transmiss Technol, Beijing 102209, Peoples R China
[2] State Grid Smart Grid Res Inst Co LTD, Dept Elect Engn New Mat, Beijing 102209, Peoples R China
[3] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China
[4] State Grid Liaoning Elect Power Supply Co Ltd, Shenyang Elect Power Supply Co, Shenyang 110003, Peoples R China
来源：
ADVANCED ENGINEERING MATERIALS | 2024年 / 26卷 / 21期
基金：
中国国家自然科学基金;
关键词：
Al-Mg-Si alloy; electrical conductivity; Er-Sc co-addition; mechanical properties; microstructure; PRECIPITATION-HARDENING BEHAVIOR; STRETCH FORMABILITY; MG/SI RATIOS; CU; DUCTILITY;
D O I：
10.1002/adem.202400847
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effect of solutionization (two-step vs one-step solution treatment) and deformation (one-step solutionization + deformation vs no deformation) on microstructural evolution and mechanical/electrical properties of an aged Al-Mg-Si alloy with microalloying Er + Sc co-addition is studied, respectively, in comparison with its counterpart with a single Sc addition at the same total addition content. Experimental results showed that the Er + Sc co-added Al-Mg-Si alloy displayed a combination of aging hardness and electrical conductivity superior to the single Sc-added alloy, under either two-step or one-step solution treatment. This highlights an effective microalloying way to improve the Al-Mg-Si alloy by partially using cheap Er rather than full addition of expensive Sc. While the introduction of deformation yielded to a higher aging hardness but a lower electrical conductivity in the Er + Sc co-added alloy apparently than in the single Sc-added alloy. When comparing among the Er + Sc co-added alloys, it is found that, although the one-step solutionization leads to the highest aging hardness (approximate to 102 HV in peak aging) and the deformation introduction results in the highest electrical conductivity (up to 57.3% IACS), the two-step solutionization brought about the best combination of aging hardness (approximate to 87 HV) and electrical conductivity (up to 56.7% IACS). Microstructural evolution under different treatments is analyzed to rationalize the variation in aging hardness and electrical conductivity especially in the Er + Sc co-added Al-Mg-Si alloy. This study investigates the effect of Er + Sc co-addition on microstructure, mechanical property, and electrical property of Al-0.53 wt% Mg-0.49 wt% Si alloy with different heat treatments and deformation processing for comparison. Compared with the full Sc addition, the Er + Sc co-addition could lead to hardness increased and electrical conductivity simultaneously raised under suitable heat treatment.image (c) 2024 WILEY-VCH GmbH
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页数：12
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