Parameters of Necking Onset during Deformation of Chromium–Nickel Steel Irradiated by Neutrons

Merezhko, M. S.; Maksimkin, O. P.; Merezhko, D. A.; Shaimerdenov, A.A.; Short, Michael P.

doi:10.1134/s0031918x19050120

Cited by 9 publications

(2 citation statements)

References 7 publications

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“…Any metal spontaneously delaminates into actively deforming regions and regions with the close to zero deformation during the plastic flow. The most visual and vivid manifestations of plastic flow localization occure at the macrolevel such as formation of a visible neck [1], dynamic strain aging [2], the formation of Luders bands [3], autowaves of plastic deformation [4], and others. These processes form the strength and plasticity of the material, effect significantly on the ability of metals to deform without destruction [5].…”

Section: Introductionmentioning

confidence: 99%

Localization of Plastic Deformation in the Copper and Stainless Steels Samples, Irradiated with Neutrons

Merezhko

2022

J. Phys.: Conf. Ser.

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The reduction of ductility of austenitic stainless steels as a result of long-term operation in the nuclear reactor core is an important problem of modern radiation materials science. Understanding the mechanisms of the effect of neutron irradiation on the mechanical properties of austenitic steels is impossible without research of localization processes occurring during the deformation. In this paper, it was found that the value of the true local deformation corresponding to the onset of neck formation in face-centered cubic structured metals decreases with an increase in the radiation dose, while the true stress remains almost constant. Additional hardening of AISI 304 steel due to the intensive formation of the martensitic α’-phase increases not only the stress at which a neck is formed in this alloy, but also the true local deformation. As a result, the uniform elongation increases and remains high after neutron irradiation to 0.05 dpa. The forehanded formation of the martensitic α’-phase in sufficient quantity before the necking onset can be considered as an additional deformation mechanism that will increase the ability of the material to deform uniformly.

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Section: Introductionmentioning

confidence: 99%

Localization of Plastic Deformation in the Copper and Stainless Steels Samples, Irradiated with Neutrons

Merezhko

2022

J. Phys.: Conf. Ser.

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“…At the Institute of Nuclear Physics (INP) of the Ministry of Energy of the Republic of Kazakhstan (Almaty), one of the basic facilities is the steady-state research nuclear reactor WWR-K, which carries out fundamental nuclear physical and material research, testing of structural and functional materials for fission and fusion reactors as well as produces radioisotopes for medicine and industry [4][5][6]. As early as 1978, the first AGAVA neutron imaging instrument was mounted on the 2-nd neutron beam port of the WWR-K reactor.…”

Section: Introductionmentioning

confidence: 99%

Non-destructive analysis of materials by neutron imaging at the TITAN facility

Nazarov

Mukhametuly

Кичанов

et al. 2021

Eurasian J. Phys. Funct. Mater.

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Since 2019, the TITAN neutron radiography and tomography facility have been operating at the WWR-K research reactor. The experimental station is intended for a wide range of applications in various fields of science. Since the launch, several interesting works have been carried out to study the internal features of lithium-ion batteries and geophysical materials. The spatial resolution of the detector system was sufficient to visualize the internal elements of the lithium battery and to separate individual grains of the pyrite mineral in the rock sample. This paper presents the technical parameters of the experimental setup and the results of the recent applied research.

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Time History of Performance Parameters of WWR-K Reactor during Gradual Replacement of the Water Reflector by a Beryllium One

et al. 2021

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Parameters of Necking Onset during Deformation of Chromium–Nickel Steel Irradiated by Neutrons

Cited by 9 publications

References 7 publications

Localization of Plastic Deformation in the Copper and Stainless Steels Samples, Irradiated with Neutrons

Localization of Plastic Deformation in the Copper and Stainless Steels Samples, Irradiated with Neutrons

Non-destructive analysis of materials by neutron imaging at the TITAN facility

Time History of Performance Parameters of WWR-K Reactor during Gradual Replacement of the Water Reflector by a Beryllium One

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