Localized attack at inclusions in 42CrMo4 QT steel

Andreatta, F.; Zanocco, M.; Virgilio, S.; Machetta, P.; Silvonen, A.; Lanzutti, A.; Fedrizzi, L.

doi:10.1016/j.electacta.2023.142754

Cited by 6 publications

(4 citation statements)

References 37 publications

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“…A detached embrittlement mechanism is a transgranular fracture in the peripheral region [44] extending from the front of the notch, with detached development along the propagation path of a crack that likely goes through the matrix lattice only (MLD).…”

Section: Microstructural Analysismentioning

confidence: 99%

“…In recent years, the research of Andreatta F. et al examined localized attacks at inclusions in 42CrMo4 QT steel [44], while Díaz A. et al studied the influence of hydrogen on the hydraulic fracture behaviour of 42CrMo4 steel welds [45], and Polášek M., et al studied the contact fatigue resistance of gun barrel steels [46].…”

Section: Introductionmentioning

confidence: 99%

“…The broken cone-head specimen and the images at 500× magnification highlight the agglomeration of dimples in the breaking surface, where intergranular fracture occurs. All the fracture surfaces are covered with distinct elongated dimples which indicate the ductile nature of the material under these deformation conditions.A detached embrittlement mechanism is a transgranular fracture in the peripheral region[44] extending from the front of the notch, with detached development along the propagation path of a crack that likely goes through the matrix lattice only (MLD).The material tested at 700 °C had a higher tenacity. Grain boundaries break at high forces due to incompletely transformed structural constituents.…”

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confidence: 99%

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The Influence of Hot Deformation on the Mechanical and Structural Properties of 42CrMo4 Steel

Pop,

Sas-Boca,

Frunză

et al. 2024

Metals

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The influence of elevated temperatures and strain rate on the mechanical and structural properties of steel 42CrMo4 were analysed experimentally in this paper. The experiments were based on uniaxial tension and compression tests at high temperatures between 700 °C and 1100 °C and strain rates in the range 0.0018–0.1 s−1. The influence of temperature and strain rate on yield stress, strain to fracture, hardness, structural changes, and fracture characteristics were analysed. The non-uniformity of deformations obtained at different values of the strain rate and temperature were also analysed. Analysis by scanning electron microscopy showed the ductile behaviour of the material. The degree of damage in the material caused by the presence of cavities increased with increasing deformation temperature. For all the presented deformation conditions, the formation of the fracture through the ductile fracture mechanism resulted from localized necking and the coalescence of microvoids. By increasing the deformation temperature and reducing the strain rate, the fracture behaviour of 42CrMo4 steel can be improved.

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Section: Microstructural Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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The Influence of Hot Deformation on the Mechanical and Structural Properties of 42CrMo4 Steel

Pop,

Sas-Boca,

Frunză

et al. 2024

Metals

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show abstract

“…In recent years, the research of Andreatta F., et al focused on inclusions in 42CrMo4 QT steel [44], Díaz A., et al studied the influence of hydrogen on the hydraulic fracture behavior of a 42CrMo4 steel welds [45] and Polášek M., et al, did research on the contact fatigue resistance of gun barrel steels [46].…”

Section: Introductionmentioning

confidence: 99%

Aspects Regarding the Influence of Hot Deformation on the Mechanical and Structural Properties of 42CrMo4 Steel

Pop,

Sas-Boca,

Frunza

et al. 2023

Preprint

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The aim of the paper is to analyze the experimental results of the influence of elevated temperatures and strain rate on the mechanical and structural properties of steel 42CrMo4. The experiments were based on uniaxial tension and compression tests at high temperatures between 700 °C and 1000 °C and strain rates range 0.0018 - 0.1 s-1. The influence of temperature and strain rate on yield stress, strain to fracture, hardness, structural changes, and fracture characteristics were analyzed. Due to the dynamic recrystallization phenomenon present during the hot tensile tests, an increase in the flow stress is observed at the beginning of the deformation, after which it decreases until the fracture. By increasing the deformation temperature from 700 °C to 1000 °C, the tensile stress decreases significantly for all strain rates. The increase in the strain rate leads to the increase in the tensile stress. In compression tests by increasing the strain rate, the true strain is slightly increasing, but this depends on the temperature. The non-uniformity of deformations obtained at different values of the strain rate and temperature were also analyzed. Analysis by scanning electron microscopy showed the ductile behavior of the material. The degree of damage of the material caused by the presence of cavities increases by increasing the deformation temperature. For all the presented deformation conditions, the presence of the fracture through the ductile fracture mechanism was produced by the localized of necking and the coalescence of microvoids. By increasing the deformation temperature and reducing the strain rate, the fracture behavior of 42CrMo4 steel can be improved.

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Effect of tellurium treatment on the pitting behavior of 38MnVS6 Non-quenched and tempered steel in alkaline environment

Wu,

Yang,

Suo

et al. 2024

Corrosion Science

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Localized attack at inclusions in 42CrMo4 QT steel

Cited by 6 publications

References 37 publications

The Influence of Hot Deformation on the Mechanical and Structural Properties of 42CrMo4 Steel

The Influence of Hot Deformation on the Mechanical and Structural Properties of 42CrMo4 Steel

Aspects Regarding the Influence of Hot Deformation on the Mechanical and Structural Properties of 42CrMo4 Steel

Effect of tellurium treatment on the pitting behavior of 38MnVS6 Non-quenched and tempered steel in alkaline environment

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