Effect of ultrasonic forging strain processing on the surface layer microstructure and temperature-dependent mechanical properties of high nitrogen austenitic steel

Narkevich, N. A.; Deryugin, Е. Е.; Перевалова, О. Б.; Власов, И. В.

doi:10.1016/j.msea.2021.142590

Cited by 7 publications

(9 citation statements)

References 27 publications

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“…At present, there are several methods for the nitrogen alloying of steels, among which the main one is smelting with nitrogen back pressure [ 2 ]. The great interest in nitrogen is also due to the possibilities of modifying the surface layers of steels using ion-plasma nitriding [ 5 , 6 , 7 ] and technologies with intensive deformation and nanostructuring [ 8 , 9 , 10 , 11 , 12 , 13 ]. An important role in the creation of metal composites is played by mechanical alloying (or mechanosynthesis), which allows the formation of supersaturated solid solutions with the subsequent precipitation of hardening secondary phases.…”

Section: Introductionmentioning

confidence: 99%

Mechanosynthesis of High-Nitrogen Steels Strengthened by Secondary Titanium Nitrides

et al. 2022

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The solid-phase mechanical synthesis of high-nitrogen ferritic and austenitic steel composites in the course of mechanical activation in a ball mill is studied by the method of Mössbauer spectroscopy and electron microscopy. For mechanical alloying, mixtures of iron alloys doped with transition metals (Ni, Cr, Mn, and Ti) and nitrides with low stability to deformation (CrN and Mn2N) were used. The correlation between the phase–concentration composition of the mechanically synthesized samples and the heat of formation of transition metal nitrides, which are part of the initial metal mixtures, is investigated. It is established that the use of titanium as an alloying additive of the Fe component of the mixture accelerates the processes of dissolution of primary nitrides and allows the transference of chromium and manganese to the position of substitution in the metallic solid solution. In addition, the titanium additive entails the formation of secondary nitrides with stabilizing the nanostructure of the mechanically synthesized samples.

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Section: Introductionmentioning

confidence: 99%

Mechanosynthesis of High-Nitrogen Steels Strengthened by Secondary Titanium Nitrides

et al. 2022

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“…Strain dispersion of the structure of metals and alloys to nanoscale state can significantly improve their physical and mechanical characteristics [1][2][3][4]. The structures formed by large and megaplastic strains are quite unusual.…”

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confidence: 99%

“…Interest in the surface hardening of metallic materials [3,4,8] by severe strain is due to a combination of technological simplicity with the effectiveness of increasing strength characteristics. These methods are promising for active application in order to harden the near-surface layers of austenitic steels with low packing defect energy.…”

mentioning

confidence: 99%

“…Representatives of this class of steels are nickel-free austenitic high-nitrogen steels. They have high strain hardening, demonstrate high strength, ductility and fracture toughness, including at negative temperatures (up to cryogenic) [4,9]. However, the effect of structure dispersion on the strain behavior and fracture nature at cryogenic temperatures in relation to the phase transformations occurring during both nanostructured pretreatment and subsequent lowtemperature strain has not been investigated.…”

mentioning

confidence: 99%

“…The papers [4,8] demonstrated that there is no HPC lattice martensite in the near-surface layer after strain treatment ε. The reason for that is strain heating causing reverse ε → γ- transformation [8] in process of treatment.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Phase Transformations in Stainless Cr-Mn-N Steel Activated by Nanostructuring Surface Treatment and Their Influence on Deformation Behavior and Fracture at Cryogenic Temperatures

Narkevich

Deryugin

Власов

2022

Technical Physics Letters

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The structure of stainless austenitic Cr-Mn-N steel after deformation treatment of its surface by ultrasonic forging strain (UFS) has been studied. It is shown that UFS activates strain aging in the near-surface layer with the formation of CrN particles. Preliminary ultrasonic treatment of the steel surface contributes to an increase in the yield strength during tensile tests at a temperature of -196oC and provides ductile fracture of the near-surface layer. Keywords: high nitrogen steel, austenite, ultrasonic forgingstrain, strain aging, cryogenic temperature, martensitic transformation.

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Effect of ultrasonic energy field on plastic deformation behavior and microstructure evolution of Ti6Al4V alloy under room-temperature compression

Gao,

Wen,

Liu

et al. 2024

Journal of Alloys and Compounds

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Effect of ultrasonic forging strain processing on the surface layer microstructure and temperature-dependent mechanical properties of high nitrogen austenitic steel

Cited by 7 publications

References 27 publications

Mechanosynthesis of High-Nitrogen Steels Strengthened by Secondary Titanium Nitrides

Mechanosynthesis of High-Nitrogen Steels Strengthened by Secondary Titanium Nitrides

Phase Transformations in Stainless Cr-Mn-N Steel Activated by Nanostructuring Surface Treatment and Their Influence on Deformation Behavior and Fracture at Cryogenic Temperatures

Effect of ultrasonic energy field on plastic deformation behavior and microstructure evolution of Ti6Al4V alloy under room-temperature compression

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