Investigation of the effect of various silicon contents on the crystallization pattern and the composition of silumin phases

Abstract

Silumin is an alloy composed of aluminum and silicon, that can contain up to 22% of silicon. It has a low cost, wear resistance and low relative weight. The main industries for using silumin are aircraft manufacturing and mechanical engineering. Given the relatively low cost of the alloy, silumin is used to produce cheap household appliances, which are often not inferior in reliability to expensive analogues. Recently, silumin has gained particular popularity in the arms industry, especially for the production of air rifles. The properties of these alloys primarily depend on the Si content, which leads to changes in its microstructure. The paper presents studies of the effect of silicon content on changes in the nature of crystallization and phase composition of silumins with Si content from 1 to 21%.

143962

“…Obtaining different structures in silumins depends on the type of modifier/additive introduced into the alloy. The resulting structures include various forms of the eutectic, e.g., granular, lamellar, banded, and refined [6,7].…”

Investigation of the Effect of Modifying the AlSi7Mg0.3 Alloy with a Fast-Cooled Master Alloy Using Heat Treatment

“…Aluminum-silicon alloy AK7 or (ASi7Mg0.3) is a typical silumin, which is in demand in the automotive industry, construction, aircraft construction, machine, automobile and tractor production. It is appreciated for its good casting properties, weldability, machinability and corrosion resistance [3]. To ensure the required properties, in alloy smelting, modification is used, which can be carried out in one of the following ways: modification with salts, modification with ligatures, modification with strontium, boron, etc.…”