In this study, the composition templating theory for heterogeneous nucleation was applied to achieve TiB₂ particles with Mn segregation on the surface, which supplied the initial composition for the heterogeneous nucleation. The interfacial segregation of added alloy element Mn and the other common impurities, such as Fe and Si, was investigated with scanning transmission electron microscopy (STEM). The modified TiB₂ particles was applied in Al-2.0Mn-1.0Fe alloys to test its effects on grain refinement of Al₆(Fe,Mn) compound. The interfaces between Al₆(Fe,Mn) particles and the engulfed TiB₂ particles were examined with TEM observation.

中文翻译：

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Mn在TiB2颗粒表面的界面偏析增强铝合金中Al6(Fe,Mn)化合物的异相形核

本研究应用异相成核的成分模板理论，实现了TiB ₂颗粒表面Mn偏析，为异相成核提供了初始成分。采用扫描透射电子显微镜 (STEM) 研究了添加的合金元素 Mn 和其他常见杂质如 Fe 和 Si 的界面偏析。将改性TiB ₂颗粒应用于Al-2.0Mn-1.0Fe合金中，测试其对Al ₆ (Fe,Mn)化合物晶粒细化的影响。用TEM观察检查Al ₆ (Fe,Mn)颗粒和被吞噬的TiB _{2颗粒之间的界面。}