Nature of anisotropy of impact toughness of structural steels with ferrite-pearlite structure

Goritskii, V. M.; Shneyderov, G. R.; Lushkin, M. A.

doi:10.1134/s0031918x13100037

Cited by 8 publications

(11 citation statements)

References 2 publications

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“…It should be noted that such a dynamic adaptation of the material under the dynamic impact is a consequence of a self-organization of the polycrystalline material. At the same time, there is a self-organization of the structural-mechanical levels of deformation of local sections of the material into the energetically most favorable configuration under given loading conditions [20]. Increasingly large conglomerates of grains become involved in the deformation process, and deformational fragmentation of the material occurs at the meso-level [19,20].…”

Section: Shear Lipsmentioning

confidence: 99%

“…At the same time, there is a self-organization of the structural-mechanical levels of deformation of local sections of the material into the energetically most favorable configuration under given loading conditions [20]. Increasingly large conglomerates of grains become involved in the deformation process, and deformational fragmentation of the material occurs at the meso-level [19,20]. Failure of the material is the final stage of fragmentation, when the process transfers to the macro-level, followed by a global loss of shear stability.…”

Section: Shear Lipsmentioning

confidence: 99%

“…3). High speed of impact loading and dynamic effects exerted on the material leads to the situation when the mechanisms of relaxation and redistribution of strains are not fully implemented during deformation [20]. In addition, the temperature-force conditions of loading have a determining influence on the fracture toughness of metal.…”

Section: Shear Lipsmentioning

confidence: 99%

“…It is known that the first plastic deformation zones are formed near the tip of the concentrator (a notch) [18][19][20]. Their advancement in the volume of the material leads to the activation of shear displacement of grains in the elastically-plastically deformed portions of the specimen material.…”

Section: Shear Lipsmentioning

confidence: 99%

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Deformation and Energy Parameters of Fracture of Steel of the Main Gas Pipeline

Maruschak¹,

Panin²,

Polyvana³

et al. 2015

Adv. Sci. Technol. Res. J.

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By example of steel 17G1S, the regularities in the impact fracture of Charpy specimens at normal and low temperatures are described. The relationship between the energy parameters of fracture (impact toughness) and the deformation response of the material (the height of shear lips) of the specimens from the pipe steel is established. The micromechanisms of impact fracture of the material are described. At 20 °C and -30 °C, focal splitting of the material was observed on the fracture surface of specimens; at -60 °C, the material failed in a brittle manner by the mechanism of cleavage.

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Section: Shear Lipsmentioning

confidence: 99%

Section: Shear Lipsmentioning

confidence: 99%

Section: Shear Lipsmentioning

confidence: 99%

Section: Shear Lipsmentioning

confidence: 99%

See 2 more Smart Citations

Deformation and Energy Parameters of Fracture of Steel of the Main Gas Pipeline

Maruschak¹,

Panin²,

Polyvana³

et al. 2015

Adv. Sci. Technol. Res. J.

View full text Add to dashboard Cite

show abstract

“…T = −20 °C: The fracture mechanism is similar to that at T = 20 °C. The size of ductile fracture pits is slightly smaller (Figure 9b) [44,45]. T = −60 °C: The major fracture mechanism at this temperature was cleavage.…”

Section: Fracture Micromechanismsmentioning

confidence: 99%

Effect of Structural Heterogeneity of 17Mn1Si Steel on the Temperature Dependence of Impact Deformation and Fracture

Моисеенко

Maruschak

Panin

et al. 2017

Metals

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Abstract:The paper deals with a theoretical and experimental study of the relationship between the microstructural parameters, mechanical properties, and impact deformation and fracture of steels using the example of 17Mn1Si pipe steel. A model for the behavior of a polycrystalline grain conglomerate under impact loading at different temperatures was proposed within a cellular automata framework. It was shown that the intensity of dissipation processes explicitly depends on temperature and these processes play an important role in stress relaxation at the boundaries of structural elements. The Experimental study reveals the relationship between pendulum impact test temperature and the deformation/fracture energy of the steel. The impact toughness was shown to decrease almost linearly with the decreasing test temperature, which agrees with the fractographic analysis data confirming the increase in the fraction of brittle fracture in this case. It was shown with the aid of the proposed model and numerical simulations that the use of the excitable cellular automata method and an explicit account of test temperature through the possibility of energy release at internal interfaces help to explain the experimentally observed features of impact failure at different temperatures.

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Improving the Cold Resistance of 70–100-mm-Thick Heavy Plates FH40 for Marine Structures Built for Arctic Service

Goli-Oglu

2015

Metallurgist

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Nature of anisotropy of impact toughness of structural steels with ferrite-pearlite structure

Cited by 8 publications

References 2 publications

Deformation and Energy Parameters of Fracture of Steel of the Main Gas Pipeline

Deformation and Energy Parameters of Fracture of Steel of the Main Gas Pipeline

Effect of Structural Heterogeneity of 17Mn1Si Steel on the Temperature Dependence of Impact Deformation and Fracture

Improving the Cold Resistance of 70–100-mm-Thick Heavy Plates FH40 for Marine Structures Built for Arctic Service

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