Scuffing resistance of salt bath nitrocarburized medium carbon steel

Krishnaraj, N.; Iyer, K. J. L.; Sundaresan, S.

doi:10.1016/s0043-1648(97)00049-5

Cited by 26 publications

(15 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently nitrided layer does not get softened due to raise of temperature even at relatively harsh environment. The work due to Krishnaraj et al [26] clearly confirms the above statement. They noted superior performances of nitrocarburizing to martensite hardening for hot working die application.…”

Section: Plasticity Dominated Wearmentioning

confidence: 54%

Use of wear mechanism map to engineer surfaces for enhanced wear resistance

Roy

2009

Trans Indian Inst Met

View full text Add to dashboard Cite

Material degradation due to unidirectional sliding wear can be found in wide range of engineering applications. Depending on the applied load and sliding velocity, several material removal mechanisms will be operative during sliding. Lim and Ashby compile these mechanisms in the form of wear mechanism map. They have also been able to estimate the wear rate in each mechanism quantitatively. However, no effort has hitherto been made to use these expressions and concepts to alter or modify the surfaces of various materials for improved wear performances. The objective of the present work is to address this issue. In this work, the expression for wear rate in various regimes will be examined critically. The important parameters that governs wear rate will be identified. An approach to improve wear rate in each regime will be suggested on the basis of identified parameters. Suggestions will be substantiated with large database and published work.

show abstract

Section: Plasticity Dominated Wearmentioning

confidence: 54%

Use of wear mechanism map to engineer surfaces for enhanced wear resistance

Roy

2009

Trans Indian Inst Met

View full text Add to dashboard Cite

show abstract

“…The austenite phase is retained due to quenching of nitrided specimens from the treatment temperatures. Krishnaraj et al 32 have reported that nitrogen and carbon lower the martensite start temperature, and this results in the retention of austenite in the transition zone between the compound layer and the diffusion layer. The retained austenite can transform to bainite and/or martensite with an increased hardness.…”

Section: Retained Austenitementioning

confidence: 99%

Investigation on liquid bath nitriding of selected steels

Balikci

Yaman

2011

Surface Engineering

View full text Add to dashboard Cite

The influence of experimental parameters, such as temperature, time, alloy composition and nitriding bath composition, on nitriding case formation on three steels has been investigated. Two of the steels are of low alloy type, one with low carbon (DIN 1?6523) and the other with medium carbon (DIN 1?7225). The third alloy is a nitriding alloy (DIN 1?8550). Two cyanate baths are used, i.e. type 1 (80 wt-% potassium cyanate) and type 2 (40 wt-% potassium cyanate). Higher temperatures, times and bath compositions result in a thicker case. As it thickens, the compound layer becomes composed of e type nitrides. In general, DIN 1?6523 has developed thicker cases, and DIN 1?8550 with Al and Cr has formed thinner cases. Porosity has been observed in the cases, and the roughness of the nitrided surfaces has been measured to be greater for the higher carbon content alloy (DIN 1?7225) in this study.

show abstract

“…Essentially, this treatment increases the surface hardness and generates a compressive residual stress state on the surface of the component. It can be applied by means of three different media: gas, liquid and plasma [5][6][7][8][9][10]. The liquid nitrocarburizing in salt bath has been widely employed in industry since the 1940s; however, this method had a major issue related to toxicity of the cyanide-cyanate salt, which was solved in 1970 [11] by adopting a nontoxic cyanate-bearing bath.…”

Section: Introductionmentioning

confidence: 99%

Effect of Salt Bath Nitrocarburizing and Post-Oxidation on Static and Fatigue Behaviours of a Construction Steel

Campagnolo

Dabalà

Meneghetti

2019

Metals

View full text Add to dashboard Cite

Several surface modification technologies are typically applied to improve the mechanical properties of the material surface of structural components subjected to severe conditions of load, wear and chemical erosion of the surface. The nitrocarburizing and post-oxidation heat treatment, also known as quench-polish-quench (QPQ), improves the fatigue, wear and corrosion resistance properties of the material, since it increases the surface hardness and generates surface compressive residual stresses. In the present contribution, the effects of the salt bath nitrocarburizing and post-oxidation heat treatment on the static and fatigue behaviours of 39NiCrMo3 construction steel have been investigated by experimentally testing plain as well as notched specimens. For comparison purposes, 39NiCrMo3 construction steel, both untreated and treated, and X5CrNiCuNb 16-4 stainless steel have been tested. First, the microstructure of the untreated and treated steel has been identified by metallographic analysis; micro-hardness measurements have been collected and residual stresses profiles have been obtained by using the X-ray diffraction technique. Then, experimental static and fatigue tests have been performed. Finally, the fracture surfaces have been analysed to locate fatigue crack nucleation sites.

show abstract

Scuffing resistance of salt bath nitrocarburized medium carbon steel

Cited by 26 publications

References 6 publications

Use of wear mechanism map to engineer surfaces for enhanced wear resistance

Use of wear mechanism map to engineer surfaces for enhanced wear resistance

Investigation on liquid bath nitriding of selected steels

Effect of Salt Bath Nitrocarburizing and Post-Oxidation on Static and Fatigue Behaviours of a Construction Steel

Contact Info

Product

Resources

About