Impact toughness of 12Cr1MoV steel. Part1 – Influence of temperature on energy and deformation parameters of fracture

Panin, S. V.; Maruschak, Pavlo; Власов, И. В.; Ovechkin, B. B.

doi:10.1016/j.tafmec.2015.12.008

Cited by 24 publications

(7 citation statements)

References 32 publications

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“…Similar to the approach implemented in the previous study, the longest falling part of the diagram corresponding to stage II was selected and linearly approximated to determine the inclination angle characterizing the ‘load decrease rate’. In general, the end of the linear section can be considered as the end of the macrocrack propagation stage and transition to final rupture.…”

Section: Resultsmentioning

confidence: 99%

The role of notch tip shape and radius on deformation mechanisms of 12Cr1MoV steel under impact loading. Part 1. Energy parameters of fracture

Panin

Maruschak

Власов

et al. 2016

Fatigue Fract Eng Mat Struct

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Impact loading curves and fracture energy of the notched 12Cr1MoV ductile steel specimens are analysed. The qualitative description and quantitative parameters are obtained for major stages of ductile and brittle fracture depending on the shape of the notch and the stress stiffness ahead. It was shown that a zone with enhanced plasticity forms in the vicinity of V‐, U‐ and I‐shaped notches at 20 °C testing temperature, giving rise to ductile fracture. The stress stiffness at the notch tip increased with testing temperature reduced to −40 °C. We demonstrated that the size of shear lips on a fracture surface is a quantitative characteristic of fracture. Using this approach, which is close by nature to non‐linear fracture mechanics, together with the quantitative description of fracture surfaces, a physical–mechanical scheme of the specimen fracture was suggested for the case of enhanced and localized (constrained) plasticity near the stress concentrator tip.

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Section: Resultsmentioning

confidence: 99%

The role of notch tip shape and radius on deformation mechanisms of 12Cr1MoV steel under impact loading. Part 1. Energy parameters of fracture

Panin

Maruschak

Власов

et al. 2016

Fatigue Fract Eng Mat Struct

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“…This phenomenon was previously established for heat‐resistant steels. Its detailed interpretation and physical basis are described in the previous article …”

Section: Discussion and Generalizationmentioning

confidence: 99%

Evaluation of dynamic fracture toughness parameters of locomotive axle steel by instrumented Charpy impact test

Sorochak

Maruschak

Yasniy

et al. 2016

Fatigue Fract Eng Mat Struct

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The analysis of the energy of fracture of specimens from steel OSL, which is widely used for the manufacture of railway axles under shock loading, is performed. The nature and quantitative parameters of the typical stages of the processes of plastic and brittle fracture, depending on the test temperature and stiffness of the stress state at the tip of the crack‐like defect, are established. It is shown that impact loading at 20 °C leads to the formation of the local zone of plasticity and ductile–brittle fracture of the material. An increased stiffness of the stress state at the tip of the defect at −40 °C causes brittle fracture. An approach is developed, which is based on using the size of shear lips as a quantitative parameter of fracture under normal and low temperatures, similar in its physical essence to deformation approaches of nonlinear fracture mechanics. Based on this approach and the quantitative analysis of specimen fracture zones, the physical and mechanical scheme of specimen fracture is proposed in the presence of localized plasticity and in its absence near the tip of the concentrator.

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“…After the five-pass HR It is known from previous papers [45] that shear lips had formed near the macroband of strain localization, both in the direction of the maximum shear stresses and perpendicular to the tension axis under the greatest normal ones. Shapes and dimensions of the shear lips characterized the effect of lowering the test temperature on the impact resistance of the material.…”

Section: After the Three-pass Hrmentioning

confidence: 97%

Increasing Low-Temperature Toughness of 09Mn2Si Steel through Lamellar Structuring by Helical Rolling

Panin

Власов

Моисеенко

et al. 2021

Metals

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The aim of the paper was to investigate the helical rolling parameters (a number of passes) for the microstructural modification and the low-temperature impact toughness improvement of the 09Mn2Si High Strength Low-Alloyed (HSLA) steel. In order to achieve this purpose, work spent to crack initiation and propagation was analyzed and compared with patterns of fracture surfaces. The microstructure and impact toughness values were presented in the temperature range from +20 to –70°C. Also, the fracture mechanisms in individual regions on the fracture surfaces were discussed. In addition, a methodology for computer simulation of the process was developed and implemented within the framework of the excitable cellular automata method and its integration with the kinetic theory of fracture. Finally, a theoretical analysis of the effect of grain shapes and orientations on the strain response patterns of a certain meso-volume simulating the material after the helical rolling was carried out.

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Impact toughness of 12Cr1MoV steel. Part1 – Influence of temperature on energy and deformation parameters of fracture

Cited by 24 publications

References 32 publications

The role of notch tip shape and radius on deformation mechanisms of 12Cr1MoV steel under impact loading. Part 1. Energy parameters of fracture

The role of notch tip shape and radius on deformation mechanisms of 12Cr1MoV steel under impact loading. Part 1. Energy parameters of fracture

Evaluation of dynamic fracture toughness parameters of locomotive axle steel by instrumented Charpy impact test

Increasing Low-Temperature Toughness of 09Mn2Si Steel through Lamellar Structuring by Helical Rolling

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