AlO对Al-Si合金中共晶硅的纳米处理效果研究

On the nano-treating effect of AlO on the eutectic Si in Al-Si alloy.

作者信息

Li Mengyu, Gao Tong, Li Chunxiao, Sun Yue, Wu Yuying, Liu Xiangfa

机构信息

Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, 17923 Jingshi Road, Jinan 250061, PR China.

出版信息

Micron. 2023 May;168:103443. doi: 10.1016/j.micron.2023.103443. Epub 2023 Mar 7.

DOI:10.1016/j.micron.2023.103443

PMID:36905753

Abstract

An Al-15 AlO alloy was added into Al-12Si melt to investigate the nano-treating effect of AlO nanoparticles on eutectic Si crystals. It was found that AlO clusters may be partly swallowed by eutectic Si or distribute surrounding them. As a result, the flake-like eutectic Si in Al-12Si alloy can transform to granular or worm-like morphologies, attributing to the influence of AlO nanoparticles on the growth behavior of eutectic Si crystals. The orientation relationship between Si and AlO was identified, and the possible modifying mechanisms were discussed.

摘要

将一种Al-15 AlO合金添加到Al-12Si熔体中，以研究AlO纳米颗粒对共晶硅晶体的纳米处理效果。发现AlO团簇可能会被共晶硅部分吞噬或分布在其周围。结果，Al-12Si合金中的片状共晶硅可转变为颗粒状或蠕虫状形态，这归因于AlO纳米颗粒对共晶硅晶体生长行为的影响。确定了Si与AlO之间的取向关系，并讨论了可能的变质机理。