دورية أكاديمية
Composition templating for heterogeneous nucleation of intermetallic compounds
| العنوان: | Composition templating for heterogeneous nucleation of intermetallic compounds |
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| المؤلفون: | Zhongping Que, Yun Wang, Zhongyun Fan, T. Hashimoto, X. R. Zhou |
| المصدر: | Scientific Reports, Vol 14, Iss 1, Pp 1-19 (2024) |
| بيانات النشر: | Nature Portfolio, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Medicine LCC:Science |
| مصطلحات موضوعية: | Interfacial segregation, Fe, AlB2, Heterogeneous nucleation, Grain refinement, Medicine, Science |
| الوصف: | Abstract Refinement of intermetallic compounds (IMCs) through enhancing heterogeneous nucleation during casting process is an important approach to improve the properties of aluminium alloys, which greatly increases the economy value of recycled Al-alloys. However, heterogeneous nucleation of IMCs is inherently more difficult than that of a pure metal or a solid solution. It requires not only creation of a crystal structure but also the positioning of 2 or more different types of atoms in the lattice with specific composition close to that of the nucleated IMCs. Previous understanding on heterogeneous nucleation is based on structural templating, usually considering the small lattice misfit at the interface between the nucleating solid and substrate. In this work, we proposed a hypothesis and demonstrated that composition templating plays a critical role in heterogeneous nucleation of IMCs. The experimental results revealed that segregation of Fe atoms on the AlB2 surface, i.e., the Fe modified AlB2 particle, provides the required composition templating and hence enhances heterogeneous nucleation of α-Al15(Fe, Mn)3Si2, resulting in a significant refinement of the α-Al15(Fe, Mn)3Si2 particles in an Al-5 Mg-2Si-1.0Mn-1.2Fe alloy. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2045-2322 |
| Relation: | https://doaj.org/toc/2045-2322 |
| DOI: | 10.1038/s41598-024-59709-w |
| URL الوصول: | https://doaj.org/article/12c3ec80d0f544c4b0f4decfd5bd2f06 |
| رقم الأكسشن: | edsdoj.12c3ec80d0f544c4b0f4decfd5bd2f06 |
| قاعدة البيانات: | Directory of Open Access Journals |
Find this article in full text from Springer Verlag. 
Full Text Finder | تدمد: | 20452322 |
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| DOI: | 10.1038/s41598-024-59709-w |