Microstructural Feature of As-east A-356 Alloy Modifiers with the Addition of SrO

To explore the effect of strontium on the structure of as-cast A356 alloy, the strontium was incorporated to the alloy by metallothermic reduction of SrO where the mineral was added to the melt through the submerged powders injection technique. The evaluation of the modification of the eutectie sili...

Full description

Saved in:
Bibliographic Details
Published in:武汉理工大学学报：材料科学英文版 2014 (3), p.617-619
Main Author: MUNIZ Rodrigo FLORES Alfredo ORTIZ Juan RODRIGUEZ Nelly MARTINEZ Fernando OROZCO Pilar LUNA Jesus Equihua Fabian Garcia Adrian
Format: Article
Language:English
Subjects:
A356合金
变形结构
扫描电子显微镜
改性剂
显微结构特征
电感耦合等离子体
金属热还原
铸态合金
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:To explore the effect of strontium on the structure of as-cast A356 alloy, the strontium was incorporated to the alloy by metallothermic reduction of SrO where the mineral was added to the melt through the submerged powders injection technique. The evaluation of the modification of the eutectie silicon and the chemical analysis of samples were done using optical microscopy （OP） and inductively coupled plasma （ICP）, respectively, while microstructural analyses by scanning electron microscopy （SEM）, and the injection time was variable. Magnesium was added to the melt to increase the reactivity and reduce the surface tension of the molten aluminum. It was possible to increase the strontium content from 0 to 0.027% after 20 minutes treatment. This concentration was sufficient to bring about full modification structure of eutectic silicon of as cast alloy A 356 and the acceptable quality metallurgical of alloy.
ISSN:1000-2413
1993-0437