THE APPLICATION OF Ni FOR IMPROVEMENT OF Al-Si-Fe ALLOYS

Materiálové Inžinierstvo. 2009;16(4):29-32

 

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Journal Title: Materiálové Inžinierstvo

ISSN: 1335-0803 (Print); 1338-6174 (Online)

Publisher: Univerzity of Zilina. Faculty of Mechanical Engineering

LCC Subject Category: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials

Country of publisher: Slovakia

Language of fulltext: English

Full-text formats available: PDF

 

AUTHORS

Jozef Petrík

EDITORIAL INFORMATION

Peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 30 weeks

 

Abstract | Full Text

Iron, often present in secondary material (scrap) forms brittle and hard needles in Al-Si alloys.These particles decrease the mechanical properties of castings. A reliable and economic method of iron elimination from aluminium alloys has not been well-known yet in metallurgical practice. The influence of nickel as an iron corrector (up to 0.7 %) and iron (up to 2.5 %) on the fluidity, microstructure and mechanical properties of the Al alloy with 9.75 % Si, 0.2 % Mg was evaluated. The presence of Ni results in shortening of the needles, but the segmentation of ß needles was not observed. Improvement of mechanical properties was observed despite of low affecting of microstructure.