High-temperature mechanical properties of low-carbon steel used for the manufacture of core catcher vessel

Nikulin, S. A.; Рогачев, С. О.; Nikolaev, Yu. A.; Vasiliev, S. G.; Белов, В. А.; Turilina, V. Yu.

doi:10.1016/j.pnucene.2021.104015

Cited by 10 publications

(3 citation statements)

References 13 publications

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“…The stacking fault energy (SFE) [1,29,30] plays a crucial role in governing the deformation mechanism of Fe-Mn-Al-C steels. The magnitude of the SFE is mainly dependent on the chemical composition.…”

Section: Resultsmentioning

confidence: 99%

Superior High‐Temperature Properties of Low‐Density Steel Enabled by a Tunable Hierarchical Microstructure

Zhao

et al. 2022

Adv Eng Mater

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The tensile properties, microstructure characteristics, and fracture mechanisms at 500 °C of Fe–Mn–Al–C–Mo–V steel processed by hot rolling (HR) and warm rolling (WR) are investigated. The HR steel obtained by rolling 1150 °C, consisting mainly of equiaxed austenite and banded ferrite, exhibits a tensile strength of 695 MPa, accompanied by an elongation of ≈45.5%. In contrast, the WR steel processed by rolling at 750 °C shows a hierarchical microstructure that consists mainly of lamellar ferrite/austenite + fine carbides, rendering a significantly increased tensile strength to 1040 MPa and an excellent elongation to ≈20.0%. This is mainly attributed to the remarkable refinement of ferrite and austenite in the WR steel, strengthening finely dispersed carbides, and obtaining numerous low‐angle grain boundaries in the matrix. The tensile fracture morphology is a ductile failure in both types of steel. The fracture of HR steel is attributed to the cracks enabled by the austenite localized slip deformation in the austenite and the fracture of the precipitates; the failure of the WR steel is mainly ascribed to the cracking along the lamellar structure due to the κ‐carbides pinning lamellar ferrite phase boundary leading to high strain localization.

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Section: Resultsmentioning

confidence: 99%

Superior High‐Temperature Properties of Low‐Density Steel Enabled by a Tunable Hierarchical Microstructure

Zhao

et al. 2022

Adv Eng Mater

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“…The ferrite in the annealed steel is a body-centered cubic structure, which belongs to a soft and tough phase. Cementite is a hard and brittle phase with a complex structure [2] .…”

Section: Micro Mechanism Analysismentioning

confidence: 99%

“…The machine is started and slowly loaded until the test piece is broken. The general testing machine can automatically draw a curve of the axial force and the corresponding elongation during the test, which is called the "tensile curve" [2][3] .…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of carbon steel under uniaxial static tension

Wang

2023

J. Phys.: Conf. Ser.

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With the continuous development of science and technology, carbon steel is widely used in production and life. Especially at the practical application level, in the engineering application, the analysis of the mechanical properties of carbon steel materials has become increasingly prominent. The tensile test is a mechanical property test in which a standard tensile specimen is pulled to fracture at a specified tensile speed under the continuous action of static axial tensile force. The force and elongation are continuously recorded during the tensile process so as to obtain its strength criterion and plasticity criterion. In this paper, the characteristics of mechanical properties of the high, medium, and low carbon steels under uniaxial static tension are discussed. The reasons for the different mechanical properties of steels with different carbon content are explained from a microscopic perspective. The study provides some basic assistance to those who need relevant information.

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