Formation of gas induced shrinkage porosity in Mg-alloy high-pressure die-castings

被引：96

作者：

Lee, Soon Gi ^{[1
]}

Gokhale, Arun M. ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

SCRIPTA MATERIALIA | 2006年 / 55卷 / 04期

基金：

美国国家科学基金会;

关键词：

Mg-alloys; pressure die-casting; casting defects; porosity;

D O I：

10.1016/j.scriptamat.2006.04.040

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

It is shown that gas pores can facilitate formation of shrinkage porosity in high-pressure die-castings. Air in the gas pores is an efficient heat-insulating medium that retards heat transfer in the melt as compared to regions without porosity, leading to lower local solidification rate, which can induce shrinkage porosity formation. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：387 / 390

页数：4

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