Influence of accumulations of nonmetallic inclusions on the static failure of pearlitic steel

Budnitskii, G. G.; Velikanov, A. V.; Kiseleva, T. N.; Shur, E. A.

doi:10.1007/bf00693280

Cited by 1 publication

(1 citation statement)

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“…2) Most of the oxide and silicate inclusions in steel are brittle, which break the continuity of steel matrix and lead to the stress concentration and crack under loading. 3,4) It was reported that the oxide inclusions can act as the heteronucleation points during the precipitation of MnS in the solidification and cooling process of the steel, which would form the complex inclusion of MnS-Al 2 O 3 -SiO 2 . 5) The complex inclusion could reduce the stress concentration between the oxide inclusions and the steel matrix because the sulfide is wrapped on the surface of oxide, which could prevent the crack propagation on the oxide and improve the fracture toughness of the steel.…”

Section: Introductionmentioning

confidence: 99%

First Principles and Experimental Study on the Atomic Formation of MnS–Al2SiO5 Inclusions in Steel

Meng

Guo

et al. 2022

ISIJ Int.

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The complex inclusions of Al 2 O 3 -SiO 2 is a common inclusion in the steel, which leads to the stress concentration in the steel products. The formation of MnS on the surface of Al 2 O 3 -SiO 2 could reduce the stress concentration due to the high plasticity of the MnS. In this study, the formation of MnS-Al 2 SiO 5 complex inclusions is investigated at the atomic level by using first principles calculation based on the density functional theory (DFT). The adsorption energy of the atoms of Mn and S on the Al 2 SiO 5 (110) surface was calculated with various initial positions and sequence. The interaction among the atoms was calculated to analyze the stable structures after the adsorption of the Mn and S on the Al 2 SiO 5 (110) surface. The formation of the MnS on the surface of Al 2 SiO 5 was proved by analyze the structure formed by the adsorbed atoms that shows the similar tetracyclic structure of the MnS crystal.

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Section: Introductionmentioning

confidence: 99%