Resource-saving direct alloying of steel

Рыбенко, И. А.; Nokhrina, O. I.; Rozhikhina, I. D.; Golodova, M. A.; Tsymbal, V. P.

doi:10.3103/s0967091217020097

Cited by 4 publications

(1 citation statement)

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“…The effect of the modification was evaluated on the basis of the results of metallographic studies and analysis of the mechanical properties of materials. The microstructure of cast irons after mechanical tests was investigated on longitudinal and transverse sections, in etched and unetched states [8,9]. The initial microstructure of the cast iron was evaluated according to GOST 3443-87.…”

Section: Materials and Methods Of Researchmentioning

confidence: 99%

Results of Modification of Cast Iron by Carbon Nanostructures of Gas Cleaning Dust of Silicon Production

Karlina¹,

Kondratiev²,

Balanovsky³

et al. 2018

Proceedings of the International Conference "Aviamechanical Engineering and Transport" (AVENT 2018)

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A series of experiments for the melting of cast iron GI15, according to the sandwich-type scheme of the process with a modifier (composition 1, 2, 3) did not reveal any significant differences in the mechanical properties of the modified samples, depending on the mode of administration. Surface examination of the samples with the help of scanning electron microscopy showed significant differences in the structure of the metal surface. All the materials studied have the structure of gray iron on a ferrite-pearlitic basis with graphite of a laminar rectilinear form of the type PGf1, in unmodified samples. Modified samples have the form of inclusions of graphite of the type PGf4 nestshaped, vortical shape. The conducted studies of microstructures after mechanical tests of samples of cast iron GI30, modified with composition 2, showed the presence of inclusions of globular graphite. The introduction of small amounts of a modifier with nano-sized structures during the teeming leads to: an increase in the content of perlite in the metal base; change in the form of graphite inclusions of cast iron from lamellar to nest-shaped (rosette), spherical (globules); increase in strength up to 35-50%.

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Section: Materials and Methods Of Researchmentioning

confidence: 99%