Theoretical foundations of ferrosilicium disintegration

[摘要] The crystallization processes and solid-phase transformations in alloys FS-75, FS-65, FS-45 and the influence of impurities (aluminum) on the possibility of disintegration of ferroalloys were considered on the basis of state diagrams analysis of Fe - Si and Fe-Si-Al systems. It was shown that the mechanisms of crystallization of melts of different compositions differ quite significantly, both in the chemistry of the process, and in the number and composition of the crystallization products. Process of ferroalloys disintegration depends on many factors: the alloy composition, the degree of superheat, the cooling rate, completeness of solid phase reactions, etc.

[发布机构] Department of Non-ferrous Metallurgy and Chemical Technology, Siberian State Industrial University, 42 Kirova Street, Novokuznetsk; 654007, Russia^1;JSC Kuznetsk Ferroalloys, Novokuznetsk; 654000, Russia^2

[效力级别] 金属学 [学科分类] 材料科学（综合）

[关键词] Alloy compositions;Cooling rates;Crystallization process;Crystallization products;Ferrosilicium;Solid phase reaction;Solid-phase transformation;Theoretical foundations