The effects of microalloying with silicon and germanium on microstructure and hardness of a commercial aluminum alloy

The effects of microalloying with silicon and germanium on microstructure and hardness of a commercial aluminum alloy

The effect of small additions of Si and Ge on the microstructure and hardness was investigated during aging of a commercial 2219 aluminum alloy. It was found that for the same level of microalloying in alloy 2219SG (containing Si and Ge), a maximum hardness was achieved 3 times faster than in alloy...

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Bibliographic Details
Main Authors: VESNA MAKSIMOVIC, SLAVICA ZEC, VELIMIR RADMILOVIC, MILAN T. JOVANOVIC
Format: Article
Language:English
Published: Serbian Chemical Society 2003-11-01
Series:Journal of the Serbian Chemical Society
Subjects:
AlCuSiGe alloys
Al alloy 2219
SiGe precipitate
heterogeneous precipitation
precipitate strengthening
Online Access:http://www.shd.org.yu/HtDocs/SHD/Vol68/No11/V68-No11-13.pdf
Description
Summary:The effect of small additions of Si and Ge on the microstructure and hardness was investigated during aging of a commercial 2219 aluminum alloy. It was found that for the same level of microalloying in alloy 2219SG (containing Si and Ge), a maximum hardness was achieved 3 times faster than in alloy 2219S (without Ge). The accelerated precipitation kinetics is a consequence of the presence of fine SiGe particles, serving as heterogeneous precipitation sites for q strengthening particles.
ISSN:0352-5139

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