Studies of structural and mechanical properties of aluminum skeleton castings
Journal Title: Archiwum Odlewnictwa - Year 2009, Vol 9, Issue 3
Abstract
Skeleton castings were manufactured in accordance to elaborated production technology. The subject of the research was the microstructural analysis of non - monolithic castings. Analysis of metallographic specimens and quantitative analysis of silicon crystals and secondary dendrite-arm spacing analysis of solution α were performed. Studies were executed for typical regions of skeleton castings. The regions were diversified regarding the cooling rate. The greatest value of compression strength were observed for casting manufactured according to technological conditions: pouring temperature Tpour 1013 K, temperature of the mould Tmould 333 K and height of the gating system h – 265 mm. Technological conditions and modification treatment were determined on base of advantageous structural properties (high homogeneity and refinement). On basis of the research authors confirmed that in applied conditions of solidification advantageous structure of AlSi11 alloy was obtained. The article showed the method of structure design of AlSi11 alloys skeleton castings, which was essential to obtain favorable operating properties of skeleton castings in future technical applications.
Authors and Affiliations
M. Cholewa
Keywords
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