Mechanical Properties of AlSi9Mg Alloy with a Sodium Modifier

Tomasz Lipiński; Paweł Szabracki

doi:10.4028/www.scientific.net/SSP.223.78

Paper Titles

Dimensional Structure of Non-Metallic Inclusions in High-Grade Medium Carbon Steel Melted in an Electric Furnace and Subjected to Desulfurization
p.46

Synthesis and Thermal Characterization of Dysprosium Zirconate
p.54

The Use of Topology Optimization in Shaping the Strength of Castings
p.62

The Research on the Ablation Casting Technology for Aluminium Alloys
p.70

Mechanical Properties of AlSi9Mg Alloy with a Sodium Modifier
p.78

Modelling of Heat Flow in Bundles of Round Steel Bars Including the Formation of Scale Layer
p.89

Investigations on the Thermo-Mechanical Properties of CrN/CrCN Gradient Coatings Using a Thermo-Dilatometric Method
p.100

Corrosion Resistant Layers Produced in Vacuum Titanizing Process on a Low Carbon Steel Surface Coated Electrolytically with Cobalt
p.110

Diffusion Carbide Layers Produced on Tool Steel in Chromium Chloride Atmosphere at Low Pressure
p.119

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Mechanical Properties of AlSi9Mg Alloy with a Sodium Modifier

Abstract:

Al–Si alloys are among the most popular casting metals. Two-component aluminium alloys with silicon are not suitable for direct use after melting. Subject to their silicon content, Al Si alloys have a coarse-grained eutectic phase, and alloys with more than 13% Si content also feature large crystallites or β-phase needles. The β-phase is hard, but also fragile. Large crystallites are good planes of division, and they reduce the mechanical properties of alloys.In this study, the Al-9% Si alloy was refined with a sodium modifier. The modifier was added to the mould by the in-mould method. The modifier's influence on the microstructure and mechanical properties of the alloy was presented graphically. The results of the analysis indicate that the compound modifier influenced the evaluated properties of the Al-9%Si hypoeutectic alloy.

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Periodical:

Solid State Phenomena (Volume 223)

Pages:

78-86

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.223.78

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Online since:

November 2014

Authors:

Tomasz Lipiński*, Paweł Szabracki

Keywords:

Al-Si Alloys, Mechanical Property, Modification, Silumin

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* - Corresponding Author

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