Optimization of the Compositions of the High Strength Casting Aluminium Alloys Based on Nickel Eutectic

Aliya Amenova; Dauletkhan Smagulov

doi:10.4028/www.scientific.net/AMR.911.152

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 911Optimization of the Compositions of the High...

Optimization of the Compositions of the High Strength Casting Aluminium Alloys Based on Nickel Eutectic

Abstract:

The phase composition of the AlNiMnFeSiZr system was analyzed with respect to new-generation heat resistant casting aluminum alloys based on a Ni-containing eutectic, which are strengthened by the Al₃Zr (L12) nanoparticles. It is shown that the presence of iron and silicon considerably complicates the phase analysis compared with the AlNiMnFe base alloy. Alloys with low silicon content have a sufficiently good casting property, which enables fabrication of thin-walled castings, not inferior to AA356 alloy types widely used to cast complex shapes. Addition of silicon to the AlNiMnFe base alloy sharply deteriorates hot cracks. Silicon greatly decreases the solubility of Zr at (Al), which is reflected on hot brittleness of Al2%Ni1%Mn0,5%Fe-0,2%Zr system alloys.

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Periodical:

Advanced Materials Research (Volume 911)

Pages:

152-157

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.911.152

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Online since:

March 2014

Authors:

Aliya Amenova, Dauletkhan Smagulov

Keywords:

Cast Aluminum Alloys, Economically Doped, Heat Resistant, High Strength, Phase Composition, Specific Strength, Thermally Stable

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