Effect of Aging Treatment on Mechanical and Electrical Properties of Al – 0.35Cu – 0.18Sc – 0.06Zr Conductors for High-Performance Applications

IF 0.5 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

Metal Science and Heat Treatment Pub Date : 2025-07-29 DOI:10.1007/s11041-025-01135-4

Chunxin Wang, Chenchi Qu, Xin Qi, Binchuan Li, Qing Han, Xudong Luo

{"title":"Effect of Aging Treatment on Mechanical and Electrical Properties of Al – 0.35Cu – 0.18Sc – 0.06Zr Conductors for High-Performance Applications","authors":"Chunxin Wang, Chenchi Qu, Xin Qi, Binchuan Li, Qing Han, Xudong Luo","doi":"10.1007/s11041-025-01135-4","DOIUrl":null,"url":null,"abstract":"<p>The effect of the aging mode on the mechanical and electrical properties of the heat-resistant electrically conductive aluminum alloy Al – 0.35Cu – 0.18Sc – 0.06Zr is studied. It is found that the highest set of operational properties of the alloy is achieved after aging at a temperature of 663 K for 15 hours. After aging under this mode, the microstructure of the alloy is characterized by a uniform distribution of dispersed inclusions of secondary phases Al<sub>3</sub>(Sc, Zr) 10 – 20 nm in size in the aluminum matrix. Such a structure ensures strengthening of the alloy by the Orowan mechanism, due to which the tensile strength increases to 170 MPa. At the same time, there is a significant increase in the electrical conductivity of the alloy to 60.4% IACS due to a decrease in the distortion of the crystal lattice. The results of heat resistance tests in combination with the plotted Arrhenius curves showed that the effective service life of Al – 0.35Cu – 0.18Sc – 0.06Zr conductors at 503 K reaches 350,400 h.</p>","PeriodicalId":701,"journal":{"name":"Metal Science and Heat Treatment","volume":"67 1-2","pages":"106 - 114"},"PeriodicalIF":0.5000,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metal Science and Heat Treatment","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11041-025-01135-4","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}

引用次数: 0

Abstract

The effect of the aging mode on the mechanical and electrical properties of the heat-resistant electrically conductive aluminum alloy Al – 0.35Cu – 0.18Sc – 0.06Zr is studied. It is found that the highest set of operational properties of the alloy is achieved after aging at a temperature of 663 K for 15 hours. After aging under this mode, the microstructure of the alloy is characterized by a uniform distribution of dispersed inclusions of secondary phases Al₃(Sc, Zr) 10 – 20 nm in size in the aluminum matrix. Such a structure ensures strengthening of the alloy by the Orowan mechanism, due to which the tensile strength increases to 170 MPa. At the same time, there is a significant increase in the electrical conductivity of the alloy to 60.4% IACS due to a decrease in the distortion of the crystal lattice. The results of heat resistance tests in combination with the plotted Arrhenius curves showed that the effective service life of Al – 0.35Cu – 0.18Sc – 0.06Zr conductors at 503 K reaches 350,400 h.

Abstract Image

查看原文本刊更多论文

时效处理对高性能Al - 0.35Cu - 0.18Sc - 0.06Zr导体机电性能的影响

研究了时效方式对Al - 0.35Cu - 0.18Sc - 0.06Zr耐热导电铝合金力学性能的影响。结果表明，在663 K的温度下时效15小时后，合金的操作性能达到最高。在此模式下时效后，合金的显微组织表现为在铝基体中均匀分布10 ~ 20 nm大小的分散的二次相Al3（Sc, Zr）夹杂物。这样的结构确保了合金通过Orowan机制的强化，因此抗拉强度增加到170 MPa。同时，由于晶格畸变的减少，合金的电导率显著提高到60.4% IACS。结合绘制的Arrhenius曲线的耐热性试验结果表明，Al - 0.35Cu - 0.18Sc - 0.06Zr导体在503 K下的有效使用寿命达到350,400 h。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Metal Science and Heat Treatment 工程技术-冶金工程

CiteScore

1.20

自引率

16.70%

发文量

102

审稿时长

4-8 weeks

期刊介绍： Metal Science and Heat Treatment presents new fundamental and practical research in physical metallurgy, heat treatment equipment, and surface engineering. Topics covered include: New structural, high temperature, tool and precision steels; Cold-resistant, corrosion-resistant and radiation-resistant steels; Steels with rapid decline of induced properties; Alloys with shape memory effect; Bulk-amorphyzable metal alloys; Microcrystalline alloys; Nano materials and foam materials for medical use.