A Research of Impurity With Nonmetallic Inclusions in Large Ingots of 38хн3мфа Steel Weighing 24,2 Tons

Gamanyuk, S. B.; Rutskiy, D. V.; Zyuban, N. A.; Kirilichev, M. V.

doi:10.21685/2072-3059-2017-1-10

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2021

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“…Based on Gibbs' method of chemical potentials, the thermodynamic relations, describing the origin and growth of non-metallic inclusions in steel, were obtained [8]. The influence of non-metallic inclusions on the properties and structure of the different types of steel is described in [9][10][11][12][13][14][15][16]. The influence of the morphology of non-metallic inclusions on the destruction of highstrength corrosion-resistant steel was carried out in [17].…”

Section: Introductionmentioning

confidence: 99%

Parameter analysis of non-metallic inclusion formation in thermite alloys

et al. 2021

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The methodology of calculating parameters of the primary and secondary non-metallic inclusion formation in thermite alloys is offered. The regularities of the growth time of non-metallic inclusion in the form of corundum depending on its size, mass and quantity are analysed. It is shown that in the thermite alloy obtained by self-propagating high-temperature synthesis, the average size of corundum inclusions, surrounding the heterogeneous inclusions of chromium carbide, is 15.4 μm. It is shown that during the process of aluminothermic reactions of the SHS process a significant number of small inclusions of corundum is formed. It is shown that the alumina particles are dissolved in the alloy and they are the centers of crystallization and play the role of inoculating modifier.

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Section: Introductionmentioning

confidence: 99%