Sr对再生Al-Si-Fe合金富铁相演化的催化作用

IF 2.3 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

JOM Pub Date : 2025-08-19 DOI:10.1007/s11837-025-07618-2

M. Kishor, P. Kaushik, A. K. Ramavajjala, S. A. G. Nahid, V. K. Modalavalasa, S. R. Gorja, A. K. Prasada Rao

{"title":"Sr对再生Al-Si-Fe合金富铁相演化的催化作用","authors":"M. Kishor, P. Kaushik, A. K. Ramavajjala, S. A. G. Nahid, V. K. Modalavalasa, S. R. Gorja, A. K. Prasada Rao","doi":"10.1007/s11837-025-07618-2","DOIUrl":null,"url":null,"abstract":"<div><p>Iron impurity in Al-Si alloys promotes the formation of plate-like β-Fe-rich intermetallics, while the presence of 0.1wt.% Mo-refined plate-like intermetallic phases occurs without significantly changeing their morphology. The present work deals with the influence of strontium (Sr) on the morphological changes in the Fe-rich phases in the recycled alloys (Mo modified). Solidification kinetics and microstructural analysis using computer-aided cooling curve analysis (CACCA), SEM-EDS, STEM and XRD, respectively, reveal a catalytic role of Sr in promoting the evolution of α-Al<sub>8</sub>(FeMo)Si phases over β-Al<sub>5</sub>FeSi-phases. Sr addition shows significant refinement in eutectic-Si and β-Fe phases and promotes the nucleation of Chinese-script α-Fe-rich phases in the recycled alloys.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 11","pages":"8309 - 8318"},"PeriodicalIF":2.3000,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Catalytic-Role of Sr on the Evolution of Fe-rich Phases in Recycled Al-Si-Fe Alloys\",\"authors\":\"M. Kishor, P. Kaushik, A. K. Ramavajjala, S. A. G. Nahid, V. K. Modalavalasa, S. R. Gorja, A. K. Prasada Rao\",\"doi\":\"10.1007/s11837-025-07618-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Iron impurity in Al-Si alloys promotes the formation of plate-like β-Fe-rich intermetallics, while the presence of 0.1wt.% Mo-refined plate-like intermetallic phases occurs without significantly changeing their morphology. The present work deals with the influence of strontium (Sr) on the morphological changes in the Fe-rich phases in the recycled alloys (Mo modified). Solidification kinetics and microstructural analysis using computer-aided cooling curve analysis (CACCA), SEM-EDS, STEM and XRD, respectively, reveal a catalytic role of Sr in promoting the evolution of α-Al<sub>8</sub>(FeMo)Si phases over β-Al<sub>5</sub>FeSi-phases. Sr addition shows significant refinement in eutectic-Si and β-Fe phases and promotes the nucleation of Chinese-script α-Fe-rich phases in the recycled alloys.</p></div>\",\"PeriodicalId\":605,\"journal\":{\"name\":\"JOM\",\"volume\":\"77 11\",\"pages\":\"8309 - 8318\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2025-08-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"JOM\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11837-025-07618-2\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"JOM","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11837-025-07618-2","RegionNum":4,"RegionCategory":"材料科学","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

Al-Si合金中的铁杂质促进了板状β-富铁金属间化合物的形成，而0.1wt的存在促进了β-富铁金属间化合物的形成。钼精炼的片状金属间相发生，但其形态没有明显改变。本文研究了锶（Sr）对再生合金（Mo改性）富铁相形态变化的影响。利用计算机辅助冷却曲线分析（CACCA）、SEM-EDS、STEM和XRD对合金的凝固动力学和微观组织进行了分析，结果表明Sr对α-Al8(FeMo)Si相的演化具有促进作用，而对β- al5fesi相的演化具有促进作用。Sr的加入对共晶si相和β-Fe相有明显的细化作用，促进了再生合金中汉字富α- fe相的形核。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Catalytic-Role of Sr on the Evolution of Fe-rich Phases in Recycled Al-Si-Fe Alloys

Iron impurity in Al-Si alloys promotes the formation of plate-like β-Fe-rich intermetallics, while the presence of 0.1wt.% Mo-refined plate-like intermetallic phases occurs without significantly changeing their morphology. The present work deals with the influence of strontium (Sr) on the morphological changes in the Fe-rich phases in the recycled alloys (Mo modified). Solidification kinetics and microstructural analysis using computer-aided cooling curve analysis (CACCA), SEM-EDS, STEM and XRD, respectively, reveal a catalytic role of Sr in promoting the evolution of α-Al₈(FeMo)Si phases over β-Al₅FeSi-phases. Sr addition shows significant refinement in eutectic-Si and β-Fe phases and promotes the nucleation of Chinese-script α-Fe-rich phases in the recycled 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

JOM 工程技术-材料科学：综合

CiteScore

4.50

自引率

3.80%

发文量

540

审稿时长

2.8 months

期刊介绍： JOM is a technical journal devoted to exploring the many aspects of materials science and engineering. JOM reports scholarly work that explores the state-of-the-art processing, fabrication, design, and application of metals, ceramics, plastics, composites, and other materials. In pursuing this goal, JOM strives to balance the interests of the laboratory and the marketplace by reporting academic, industrial, and government-sponsored work from around the world.