Manufacturing Technology 2019, 19(5):767-771 | DOI: 10.21062/ujep/369.2019/a/1213-2489/MT/19/5/767
Analysis of Microstructure Changes for AlSi7Mg0.3 Alloy Caused by Modification
- Faculty of Mechanical Engineering, J. E. Purkyne University in Usti nad Labem. Pasteurova 3334/7, 400 01 Usti nad Labem. Czech Republic
The aim of this experiment was to investigate the influence of the Sr modifier in the Al-Si eutectic alloy on the structure change and its mechanical properties. For this reason, an Al-Si7Mg0.3 hypoeutectic silumin alloy was modified with the aim of improving the mechanical properties of the material, mainly by increasing the ductility and strength. The subject of investigation was analysis of morphology of excreted eutectic silicon. In order to investigate the surface, metallographic cross-sectional specimens were prepared using light and electron microscopy. A static tensile test was performed for detailed examination. It has been found that the addition of the AlSr10 modifier and, over the time of modification of 1 to 2 hours, has increased the mechanical properties, in particular the ductility.
Keywords: AlSi7Mg0.3, modification, strontium, microstructure
Grants and funding:
Project SG 48207-15-2014-48-01 at UJEP.
Published: October 1, 2019 Show citation
References
- BOLIBRUCHOVÁ, D., MATEJKA, M.. (2018). Analysis of Microstructure Changes for AlSi9Cu3 Alloy Caused by Remelting. Manufacturing Technology, Vol. 18, No. 6, pp. 883-888.
Go to original source...
- MICHNA, ©. a kol. (2005). Encyklopedie hliníku, 1. Vydání, Preąov, SR: Adin s. r. o.
- BOLIBRUCHOVÁ, D., TILLOVÁ, E. (2005). Zlievarenské zliatiny Al-Si. ®ilina: EDIS - vydavateµstvo ®U.
- TILLOVA, E., CHALUPOVA, M., HURTALOVA, L., DURINIKOVA, E. (2011). Quality Control of Microstructure in Recycled Al-Si Cast Alloys. Manufacturing Technology, Vol. 11, No. 11, pp. 70-76.
Go to original source...
- VERGNANO A., BRAMBILLA E., BONFIGLIOLI G. (2019). Efficiency and Reliability of Gravity Die Casting Models for Simulation Based Design. Advances on Mechanics, Design Engineering and Manufacturing II, Vol.1, pp. 3-12.
Go to original source...
- Bonollo, F., Urban, J., Bonatto, B., & Botter, M. (2005). Gravity and low pressure die casting of aluminium alloys: a technical and economical benchmark. La metallurgia italiana, Vol 6, pp. 23-32.
- MALHOTRA, V.; KUMAR, Y. (2016). Study of Process Parameters of Gravity Die Casting Defects. Int. J. Mech. Eng. Technol, Vol. 7, pp. 208-211.
Go to original source...
- SOFYAN, B. T., KHARISTAL, D. J., TRIJATI, L., PURBA, K., & SUSANTO, R. E. (2010). Grain refinement of AA333 aluminium cast alloy by Al-Ti granulated flux. Materials & Design, Vol. 31, pp. 36-S43.
Go to original source...
- TIMELLI, G., CALIARI, D., & RAKHMONOV, J. (2016). Influence of process parameters and Sr addition on the microstructure and casting defects of LPDC A356 alloy for engine blocks. Journal of materials science & technology, Vol. 32, No. 6, pp. 515-523.
Go to original source...
- CAIS, J., SVOBODOVA, J., STANCEKOVA, D. (2017). Modification of the AlSi7Mg0,3 Alloy Using Antimony. Manufacturing Technology, Vol. 13, No. 5, pp. 685-690.
Go to original source...
This is an open access article distributed under the terms of the Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.