Microstructures and Mechanical Properties of an Artificially-Aged Al-Mg-Ga Alloy

被引：3

作者：

Park, Myeong-heom ^{[1
]}

Terada, Daisuke ^{[1
]}

Marya, Manuel ^{[2
]}

Tsuji, Nobuhiro ^{[1
]}

机构：

[1] Kyoto Univ, Dept Mat Sci & Engn, Sakyo Ku, Yoshidahonmachi, Kyoto 6068501, Japan

[2] Schlumberger Technology Corp, ETG Mat Engn, Watkinsville, GA USA

来源：

ALUMINIUM ALLOYS 2014 - ICAA14 | 2014年 / 794-796卷

关键词：

Al-Mg-Ga Alloy; Aging Response; Hardening; Phase; Microstructure; EMBRITTLEMENT;

D O I：

10.4028/www.scientific.net/MSF.794-796.1032

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructures of an Al-Mg-Ga cast alloy have been investigated to fundamentally understand its hardening response during heat-treatment. In as-cast, solution heat-treated, and aged conditions, the alloy is characterized by having a variety of metallurgical phases with unique morphologies and chemical compositions. Micro-hardness indentations subsequent to artificial aging between 50 degrees C and 300 degrees C revealed that the investigated Al-Mg-Ga alloy is capable of Vickers hardness values in excess of 180, therefore demonstrating a remarkably elevated age hardening behavior relative to conventional aluminum alloys. SEM and TEM observations, coupled with DSC analysis with several aging conditions, revealed that hardening is induced by submicron platelet precipitates having the length, width, and density that depend largely on the alloy aging conditions.

引用

页码：1032 / +

页数：2