Sr含量对Al-Si-Mg合金组织、力学性能和电导率的影响

IF 2.4 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Current Applied Physics Pub Date : 2025-03-24 DOI:10.1016/j.cap.2025.03.011

Eun Chan Ko , Byeong Kwon Lee , Hyo Sang Yoo , Yong Ho Kim , Hyeon Taek Son , Kwangmin Lee

{"title":"Sr含量对Al-Si-Mg合金组织、力学性能和电导率的影响","authors":"Eun Chan Ko , Byeong Kwon Lee , Hyo Sang Yoo , Yong Ho Kim , Hyeon Taek Son , Kwangmin Lee","doi":"10.1016/j.cap.2025.03.011","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the impact of varying Sr content on the microstructure, mechanical properties, and electrical conductivity of Al-Si-Mg alloys. Alloys were cast and extruded at 450 °C, and both as-cast and extruded samples were analyzed. Up to 0.25 wt% Sr led to the formation of a spherical AlSi<sub>2</sub>Sr<sub>2</sub> phase, enhancing tensile strength to 144 MPa due to precipitation hardening. Higher Sr contents (0.5 wt% and above) formed Al<sub>4</sub>Sr intermetallic compounds, reducing tensile strength. Electrical conductivity was minimally affected by Sr content, but extruded samples showed over 20 % higher conductivity than as-cast samples, with the best performance at 0.25 wt% Sr. This improvement is linked to reduced casting defects and a more homogeneous microstructure after extrusion. The study suggests that optimizing Sr content and processing can enhance the properties of Al-Si-Mg alloys.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"74 ","pages":"Pages 54-60"},"PeriodicalIF":2.4000,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of Sr content on the microstructure, mechanical properties, and electrical conductivity of Al-Si-Mg alloy\",\"authors\":\"Eun Chan Ko , Byeong Kwon Lee , Hyo Sang Yoo , Yong Ho Kim , Hyeon Taek Son , Kwangmin Lee\",\"doi\":\"10.1016/j.cap.2025.03.011\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigates the impact of varying Sr content on the microstructure, mechanical properties, and electrical conductivity of Al-Si-Mg alloys. Alloys were cast and extruded at 450 °C, and both as-cast and extruded samples were analyzed. Up to 0.25 wt% Sr led to the formation of a spherical AlSi<sub>2</sub>Sr<sub>2</sub> phase, enhancing tensile strength to 144 MPa due to precipitation hardening. Higher Sr contents (0.5 wt% and above) formed Al<sub>4</sub>Sr intermetallic compounds, reducing tensile strength. Electrical conductivity was minimally affected by Sr content, but extruded samples showed over 20 % higher conductivity than as-cast samples, with the best performance at 0.25 wt% Sr. This improvement is linked to reduced casting defects and a more homogeneous microstructure after extrusion. The study suggests that optimizing Sr content and processing can enhance the properties of Al-Si-Mg alloys.</div></div>\",\"PeriodicalId\":11037,\"journal\":{\"name\":\"Current Applied Physics\",\"volume\":\"74 \",\"pages\":\"Pages 54-60\"},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2025-03-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Current Applied Physics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1567173925000665\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Current Applied Physics","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1567173925000665","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

本研究探讨了不同硒含量对铝硅镁合金微观结构、机械性能和导电性能的影响。合金在 450 °C 下进行铸造和挤压，并对铸造和挤压样品进行了分析。最高 0.25 wt% 的 Sr 可导致形成球形 AlSi2Sr2 相，并由于沉淀硬化将抗拉强度提高到 144 兆帕。更高的锶含量（0.5 wt% 及以上）会形成 Al4Sr 金属间化合物，从而降低抗拉强度。电导率受 Sr 含量的影响很小，但挤压样品的电导率比铸造样品高出 20% 以上，其中 Sr 含量为 0.25 wt% 时性能最佳。研究表明，优化硒含量和加工工艺可提高铝硅镁合金的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Influence of Sr content on the microstructure, mechanical properties, and electrical conductivity of Al-Si-Mg alloy

查看原文本刊更多论文

Influence of Sr content on the microstructure, mechanical properties, and electrical conductivity of Al-Si-Mg alloy

This study investigates the impact of varying Sr content on the microstructure, mechanical properties, and electrical conductivity of Al-Si-Mg alloys. Alloys were cast and extruded at 450 °C, and both as-cast and extruded samples were analyzed. Up to 0.25 wt% Sr led to the formation of a spherical AlSi₂Sr₂ phase, enhancing tensile strength to 144 MPa due to precipitation hardening. Higher Sr contents (0.5 wt% and above) formed Al₄Sr intermetallic compounds, reducing tensile strength. Electrical conductivity was minimally affected by Sr content, but extruded samples showed over 20 % higher conductivity than as-cast samples, with the best performance at 0.25 wt% Sr. This improvement is linked to reduced casting defects and a more homogeneous microstructure after extrusion. The study suggests that optimizing Sr content and processing can enhance the properties of Al-Si-Mg alloys.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.