New Ideas on the Mechanism of Structure Formation in Nitrided Steels

Герасимов, С. А.; Zhikharev, A. V.; Березина, Е. В.; Zubarev, G. I.; Pryanichnikov, V. A.

doi:10.1023/b:msat.0000029594.14055.dc

Cited by 12 publications

(4 citation statements)

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“…And after nitriding at T=450°C and T=500°C, they are not observed. It is assumed that these inclusions are fine nitrides of alloying elements, in particular chromium [10]. In addition, the formation of fine nitrides of alloying elements at 550°C is because this temperature corresponds to a temperature of quenching this steel.…”

Section: Resultsmentioning

confidence: 99%

Change of Structure and Mechanical Properties of R6M5 Steel Surface Layer at Electrolytic-Plasma Nitriding

Skakov

Rakhadilov

Batyrbekov

et al. 2014

AMR

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In the article changes in the structure and mechanical properties of R6M5 steel surface layer after electrolytic-plasma nitriding are shown. The optimal mode of electrolytic-plasma nitriding of R6M5 high-speed steel in electrolyte based on carbamide, which allows saturation of the surface with nitrogen from low-temperature plasma and get the modified layer of high hardness and wear-resistance. It is established, that after electrolytic-plasma nitriding reduced R6M5 steel wear rate and increases its resistance to abrasive wear. Perspectivity of use an electrolytic-plasma nitriding method to improve performance cutting tools made from R6M5 steel is shown.

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Section: Resultsmentioning

confidence: 99%

Change of Structure and Mechanical Properties of R6M5 Steel Surface Layer at Electrolytic-Plasma Nitriding

Skakov

Rakhadilov

Batyrbekov

et al. 2014

AMR

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show abstract

“…Nitriding treatment is an industrial manufacturing method widely used to improve the surface properties of steels. Through gas nitriding or ion nitriding, a nitrided layer can be formed on the surface of the steels with high hardness and high wear resistance [4][5][6][7] . Although nitrided steels exhibit excellent performance in air environment, there are relatively few studies regarding their behavior and performance evaluation in sodium at a high temperature [8][9][10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

The compatibility of nitrided W18Cr4V steel in a sodium environment

Fu,

Liang,

Zhang

et al. 2024

J. Phys.: Conf. Ser.

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The guideway friction pairs are the key components of the loading elevator and unloading elevator in the refueling system for sodium cooled fast reactor. With the excellent hardness and wear resistance in air, nitrided W18Cr4V steel is a candidate material for the guideway friction pairs. In order to evaluate the applicability in the high-temperature sodium, it is important to conduct the compatibility tests of nitrided W18Cr4V steel for different exposure time. The results show that the nitrogen content of nitrided W18Cr4V steel decreased obviously after 1000 h, 2000 h and 3000 h sodium compatibility tests at 540 °C and the nitrided strengthening effect of W18Cr4V steel gradually decreased with the test duration increasing.

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“…Through the nitriding process, a uniform and hard nitrided layer can be formed on the surface of the material, which can significantly improve the surface hardness and wear resistance of the material, thereby extending the service life of the components. In many industrial applications, the nitriding processes have proven their effectiveness in improving component performance [16][17][18][19][20][21]. Nevertheless, while nitrided steels demonstrate excellent performance in air environments, there are relatively few studies regarding their behavior and performance evaluation in sodium at high temperatures [22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Aging Behavior of Nitrided W18Cr4V Steel in High-Temperature Sodium

Fu,

Liang,

Zhang

et al. 2024

Metals

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The loading and unloading elevators are the primary equipment in the refueling system, used for transferring fuel assemblies in the sodium-cooled fast reactors. The guideway friction pairs are the critical components of these elevators in the refueling system. With the excellent hardness and wear resistance in air, nitrided W18Cr4V steel is a promising material for the guideway friction pairs. In order to assess the feasibility of using nitrided W18Cr4V steel, it is essential to understand the aging behavior of nitrided W18Cr4V steel in high-temperature sodium. Aging tests were conducted on nitrided W18Cr4V steel in sodium and in argon environments at various temperatures for different exposure times. The results showed that the nitrogen atoms in the nitrided layer exhibited bidirectional diffusion behavior in the sodium or argon environment at 540 °C. Compared to the argon environment, cracks formed within the nitrided layer and the diffusion of nitrogen into the sodium was accelerated in the nitrided layer. As a significant number of nitrogen atoms had diffused into the sodium, there was little difference in the hardness between nitrided W18Cr4V steel and non-nitrided W18Cr4V steel after long-term exposure to 540 °C sodium.

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New Ideas on the Mechanism of Structure Formation in Nitrided Steels

Cited by 12 publications

References 0 publications

Change of Structure and Mechanical Properties of R6M5 Steel Surface Layer at Electrolytic-Plasma Nitriding

Change of Structure and Mechanical Properties of R6M5 Steel Surface Layer at Electrolytic-Plasma Nitriding

The compatibility of nitrided W18Cr4V steel in a sodium environment

A Study on the Aging Behavior of Nitrided W18Cr4V Steel in High-Temperature Sodium

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