Mechanism and properties of plasma nitriding AISI 420 stainless steel at low temperature and anodic (ground) potential

Shen, Hongyu; Wang, Liang

doi:10.1016/j.surfcoat.2020.126390

Cited by 23 publications

(13 citation statements)

References 26 publications

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“…To conclude this point, different aspects of the treated surface morphology are shown in Figure 5a, b. Despite it is very well known on the plasma nitriding field 66,67 , no work on edge effect from the plasma carburizing treatment was found in literature. Figure 5a shows the edge effect aspect and hardness variation along the treated surface for samples of the pressure treatment series.…”

Section: Microstructural Aspects and Treated Surface Characteristicsmentioning

confidence: 95%

Effects of the Voltage and Pressure on the Carburizing of Martensitic Stainless Steel in Pulsed DC Glow Discharge

et al. 2021

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In the present work, the influence of the pulse voltage and pressure on the treatment glow discharge characteristics and consequently on the surface properties obtained for low temperature plasma carburized AISI 420 martensitic stainless steel was investigated. Two distinct sets of samples were carburized at 450 °C, for 8 h, one aiming to study the applied pulse voltage effects, which was varied for 500, 600 and 700 V, at a fixed pressure of 400 Pa, and the other aiming to study the pressure effects, which was varied for 200, 400, and 800 Pa, at a fixed pulse voltage of 700 V. Treated samples were characterized by means of confocal laser scanning microscopy (CLSM), X-ray diffraction (XRD) analysis, microhardness and roughness measurements. The glow discharge (plasma) was characterized by optical emission spectroscopy (OES) and current measurements. Results show that the edge effect, surface roughness, hardness and outer layer growth kinetics are dependent on the studied plasma parameters. OES analyses showed that the pulse voltage parameter does not promote significant changes on the plasma chemistry, but confirmed that the molecular H 2 gas dissociation rate tends to be significantly affected by the pressure parameter giving important support for the results obtained here.

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Section: Microstructural Aspects and Treated Surface Characteristicsmentioning

confidence: 95%

Effects of the Voltage and Pressure on the Carburizing of Martensitic Stainless Steel in Pulsed DC Glow Discharge

et al. 2021

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“…AISI 420 martensitic stainless steel (AISI 420SS) is a high chromium stainless steel that has been widely used in valve, aerospace, and pump industries due to its high plasticity, shock resistance, and corrosion resistance properties [4,5]. However, its applications in some industries are still limited due to the low hardness and poor wear resistance properties of the material [6][7][8]. Laser shock peening could be a useful surface modification method for AISI 420 martensitic stainless steel as it is capable of altering the mechanical properties of the material, such as residual stress and hardness.…”

Section: Introductionmentioning

confidence: 99%

Surface Residual Stress Tailoring of 420 Martensitic Stainless Steel by Laser Shock Peening

Aprilia¹,

Maharjan²,

Tan³

et al. 2022

Asian Society for Precision Engineering and Nanotechnology (ASPEN 2022)

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“…The course of the whole process can be intensified by the presence of an electrostatic field, glow discharge, etc. (plasma nitriding) or nitriding atmosphere at higher temperatures (gas nitriding) [7], [8], [9]. The purpose of the formed hard surface layer is primarily to increase the corrosion resistance, abrasion resistance, wear resistance and increase the fatigue resistance under cyclic loading [10].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Structural and Mechanical Properties of the Nitrided Layer on Steel for Weapons

Dobrocký¹,

Joska²,

Procházka³

et al. 2021

Manufacturing Technology

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Nitriding is a technology that leads to an increase in the utility value of the product. It's most important benefits include increased corrosion resistance, abrasion resistance, wear resistance, increased resistance to fatigue failure under cyclic loading, and many others. The design of a suitable nitriding technology not only on the basis of empirics requires a closer study of the relationship between the structure of the nitriding layer, its properties and the course of a particular degradation process. Because the life of most components is related to abrasion on the surface, the occurrence of fatigue cracks and corrosion effects, it is crucial to influence the mechanical and other properties in this surface area. High functional requirements are placed on the functional surfaces of steels for weapons production, which lead to a long service life, reliability and dependability of the components of the weapon system and its safe use. The paper discuss the influence of selected nitriding technologies on the mechanical properties of steel 42CrMo4 and 34CrNiMo6, especially on the hard and microhardness of surface layers, change of its structure and next to change the surface texture and dimension of component. The steels were nitrided in plasma and gas. Nitriding in gas led to more significant structural changes in the surface layer of both steels compared to plasma nitriding.

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Mechanism and properties of plasma nitriding AISI 420 stainless steel at low temperature and anodic (ground) potential

Cited by 23 publications

References 26 publications

Effects of the Voltage and Pressure on the Carburizing of Martensitic Stainless Steel in Pulsed DC Glow Discharge

Effects of the Voltage and Pressure on the Carburizing of Martensitic Stainless Steel in Pulsed DC Glow Discharge

Surface Residual Stress Tailoring of 420 Martensitic Stainless Steel by Laser Shock Peening

Evaluation of Structural and Mechanical Properties of the Nitrided Layer on Steel for Weapons

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