Analysis of new type Al-Si-Mg alloy structures with different contents of Ca due to chemical properties
2017
Strihavkova, E., Jan Evangelista Purkyne Univ. in Ústí nad Labem (Czech Republic)
The area of use of aluminium and aluminium alloys is very wide and the future use of aluminium alloys is related to the further development of new alloys, but primarily with the production technology and processing. Recently addition master alloy AlCa10 is used with aluminium alloy for improving the technological properties. The aim of the article is analysis and comparison of the new type Al-Si-Mg alloy with different contents of calcium, from the minimum content of the 0.1 % Ca, to the maximum content of the 1% Ca and to find the optimum quantity to achieve the required properties. The analysis was performed by the alloy AlSi7Mg0. 3 alloyed with master alloy AlCa10. The newly prepared alloys were analysed by the structural analysis with emphasis on research in the chemical properties – resistance to corrosion. The sample metallographic grindings were prepared for the study of the structures by means of colour contrasts in order to determine the changes in corrosion behaviour.
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