A novel modifier on eutectic Si and mechanical properties of Al-Si alloy

被引：46

作者：

Jiang, Bo ^{[1
]}

Ji, Zesheng ^{[1
]}

Hu, Maoliang ^{[1
]}

Xu, Hongyu ^{[1
]}

Xu, Song ^{[1
]}

机构：

[1] Harbin Univ Sci & Technol, Sch Mat Sci & Engn, Harbin 150080, Heilongjiang, Peoples R China

来源：

MATERIALS LETTERS | 2019年 / 239卷

关键词：

Eutectic Si refinement; Mg-15La master alloy; Nano-cluster particles; Metals and alloys; Solidification; NUCLEATION; REFINEMENT; SILICON; MICROSTRUCTURE; BEHAVIOR;

D O I：

10.1016/j.matlet.2018.12.045

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, a novel Al-Si alloy eutectic Si modifier was proposed and prepared. The microstructure, metamorphism mechanism and mechanical properties of the eutectic Si of the alloy after adding Mg-15La master alloy were investigated. The results show that high-density nano-cluster particles appear within the eutectic Si after Mg-15La master alloy addition. After adding the master alloy, the eutectic Si morphology changes from strip to fiber or granular. The average length of eutectic Si changed from 6.04 mu m to 1.04 mu m. The mechanical properties after casting and heat treatment have been significantly improved. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：13 / 16

页数：4

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