Improving the Abrasive Wear Resistance of a Microalloyed Steel by Plasma Nitriding

Cesconetto, Maria da Conceição Rocha Lima; Franco, A.; Vieira, Estéfano Aparecido

doi:10.1590/1516-1439.307714

Cited by 8 publications

(3 citation statements)

References 17 publications

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“…Nitriding of tool surfaces is one of the most commonly used types of heat treatment of tool steels. The nitriding process increases the hardness of the surface layers as well as resistance to abrasion and corrosion [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study of Temperature Effect on Properties of Nitride Layers on X37CrMoV51 Tool Steel Used in Extrusion Aluminium Industry

Hubicki¹,

Richert

Wiewióra

2020

Materials

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The paper concerns the effect of annealing time and temperature on the properties of the nitride layer on X37CrMoV51 tool steel used in the extrusion aluminium industry. Samples made from X37CrMoV51 steel were hardened and tempered, and then nitrided at 530 °C. After nitriding, the samples were annealed in a furnace at 470 °C for 8 h, 12 h, 24 h, 30 h and 60 h, and additionally for 20 h at 270 °C. The samples were tested for structure, hardness and abrasion immediately after nitriding and again after annealing. It was found that annealing the nitrided samples leads to degradation of the nitride layer, accounting for the decrease of hardness. The annealing of the samples at 470 °C, over 12 h causes a decrease in mean hardness value from 1176 HV to 1103 HV, and annealing the samples over 30 h at this temperature leads to a decrease in hardness to 964 HV. The changes in nitrogen content in the white (compound) and diffusion layers and the resulting consequences of changes in phase composition and properties were evaluated. Annealing over 30 h at 470 °C caused the white layer to disappear and the average nitrogen content in the diffusion layer to decrease to the level of about 5–6 at%.

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Section: Introductionmentioning

confidence: 99%

An Experimental Study of Temperature Effect on Properties of Nitride Layers on X37CrMoV51 Tool Steel Used in Extrusion Aluminium Industry

Hubicki¹,

Richert

Wiewióra

2020

Materials

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“…Where F N is the load normal to the testing sphere, V is the worn volume, and L is the sliding distance (Cesconetto et al, 2015).…”

Section: Microabrasive Wear Testmentioning

confidence: 99%

Wear resistance of AISI 304 stainless steel submitted to low temperature plasma carburizing

Barcelos

Filho

et al. 2017

REM, Int. Eng. J.

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Despite the AISI 304 stainless steel has high corrosion/oxidation resistance, its tribological properties are poor, being one of the barriers for use in severe wear applications. Thus, there is a wide field for studying technologies that aim to increase the surface hardness and wear resistance of this material. In this work, hardness and wear resistance for AISI 304 stainless steel submitted to the thermochemical treatment by low temperature plasma carburizing (LTPC) in a fixed gas mixture composition of 93% H 2 and 7% CH 4 are presented. Through the evaluation of the carburizing layers, it was possible to observe a substantial improvement in tribological properties after all temperature and time of treatment. This improvement is directly related to the increase of the process variables; among them temperature has a stronger influence on the wear resistance obtained using LTPC process.

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“…42CrMo steel is often used as the material of hydraulic piston. However, due to the high load and high impact working environment of the hydraulic system, the surface of the plunger is required to have high hardness, good wear resistance and fatigue strength [1][2][3] . Plasma nitriding is one of the most widely used surface modification methods to improve the surface hardness and wear resistance of various engineering materials [4][5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Wear Properties of 42CrMo Steel by Plasma Nitriding assisted Hollow Cathode Ion Source

et al. 2021

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Plasma nitriding is a plasma-activated thermochemical method widely used to increase the fatigue strength, hardness and wear resistance of low-alloy steels. In this work, a new structure consisting of a hollow cathode metal plate can produce a hollow cathode discharge and heat the workpiece by radiation. This principle is used to perform hollow cathode source plasma nitriding (HCSPN). Herein, 42CrMo steels were treated by conventional plasma nitriding (CPN) and HCSPN treatments. The 42CrMo steels were nitrided at 525 °C for 6 h in NH 3 atmosphere. The mechanical and dry wear properties were measured by nano-indentation, Vickers micro-indentation and ball-on-disk tribometer, respectively. The H 3 /E ⁎2 ratio was 0.0274 GPa (H=11.51 GPa and E ⁎ =235.84 GPa) for the CPN sample and 0.0276 GPa (H=10.87 GPa and E ⁎ =215.54 GPa) for the HCSPN sample. Compared with the untreated 42CrMn steel, all the nitrided samples possess increased fracture toughness. Because the workpiece was not used as a discharge cathode, this HCSPN treatment overcame the disadvantages of the conventional CPN treatment. Additionally, results showed that the surface of the HCSPN sample was smoother than that of the CPN sample, and its tribological performance was better.

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Improving the Abrasive Wear Resistance of a Microalloyed Steel by Plasma Nitriding

Cited by 8 publications

References 17 publications

An Experimental Study of Temperature Effect on Properties of Nitride Layers on X37CrMoV51 Tool Steel Used in Extrusion Aluminium Industry

An Experimental Study of Temperature Effect on Properties of Nitride Layers on X37CrMoV51 Tool Steel Used in Extrusion Aluminium Industry

Wear resistance of AISI 304 stainless steel submitted to low temperature plasma carburizing

Mechanical and Wear Properties of 42CrMo Steel by Plasma Nitriding assisted Hollow Cathode Ion Source

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