Aging of a commercial Al-Cu-Si based alloy modified with germanium

被引：2
|
作者：
Maksimovic, V [1 ]
Tolley, A
Jovanovic, MT
Radmilovic, V
机构：
[1] Vinca Inst Nucl Sci, Dept Mat Sci, Belgrade, Serbia Monteneg, Serbia
[2] Univ Calif Berkeley, LBNL, Natl Ctr Electron Microscopy, Berkeley, CA USA
来源：
PROGRESS IN ADVANCED MATERIALS AND PROCESSES | 2004年 / 453-454卷
关键词：
aging kinetics; Al-Si-Ge-Cu; heterogeneous precipitation; Si-Ge particles;
D O I：
10.4028/www.scientific.net/MSF.453-454.323
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of small addition (0,7 wt.%) of Ge on precipitation during aging at 190degreesC of a modified commercial Al-Cu-Si based alloy has been studied. It was found that the maximum hardness in the alloy containing Ge was achieved three times faster than in the alloy without Ge. TEM results clearly demonstrate that the accelerated precipitation should be ascribed to a dense and fine distribution of Si-Ge particles serving as sites for heterogeneous precipitation of theta" and theta' phases. Accelerated precipitation during aging was accompanied by increase in hardness.
引用
收藏
页码：323 / 328
页数：6
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