Microstructure and Abrasive Wear Resistance of 18Cr-4Ni-2.5Mo Cast Steel

Kalandyk, B.

doi:10.2478/v10266-012-0111-0

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…A number of tests and devices can be applied to determine tribological properties of materials and obtain a broad spectrum of information [ 23 , 24 , 25 ]. Using only selected parameters, e.g., a friction coefficient or linear wear, and ignoring mass loss, for example, a proper description of the tested material is impossible.…”

Section: Introductionmentioning

confidence: 99%

Exploratory Data Analysis for the Evaluation of Tribological Properties of Wear-Resistant Surface Layers Modified with Rare-Earth Metals

et al. 2022

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The role of rare Earth metals in the improvement of the properties of metals and alloys has been analysed and described in multiple studies. Their effects on changes in microstructure and mechanical properties are most pronounced. This paper focuses on the beneficial effect of rare Earth metal oxides on the wear resistance of surface layers applied to castings intended for structural elements of machinery and equipment in mining and recycling. The experiment involved modifying prepared surfaces by adding CeO2, Y2O3, and La2O3. Hardness measurements, a scratch test, and tribological tests were performed under dry and fluid friction. The maximum wear track depth and track area were measured from the surface profile. To determine correlations between the results, exploratory data analysis was employed. Heatmaps were used to illustrate strong positive and negative interactions. The addition of oxides at increasing carbon content resulted in increased hardness, lower coefficient of friction, and reduced track area and maximum track depth. Strong negative interactions between the track area and maximum track depth were found. The differences resulting from the test conditions (fluid and dry friction) were discussed. This study demonstrated the suitability of exploratory data analysis for analysing research results and confirmed the improvement of modified surface wear resistance.

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Section: Introductionmentioning

confidence: 99%

Exploratory Data Analysis for the Evaluation of Tribological Properties of Wear-Resistant Surface Layers Modified with Rare-Earth Metals

et al. 2022

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“…Isothermal cooling curve for the ternary Fe-Cr-Ni system showing the effect of alloying addition on the precipitation of the secondary phases [5,6] The 650÷950 o C temperature range has the most undesirable effects on the mechanical and corrosion properties. The presence of brittle phase in ferrite or at the ferrite/austenite boundary is related to the segregation of alloy elements and higher diffusion rate in the ferritic phase, which is particularly important in the case of cast parts [7].…”

Section: Introductionmentioning

confidence: 99%

Archives of Foundry Engineering

Kalandyk¹,

Kasińska²,

Skrzypczyk³

2018

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This article discusses the influence of Tungsten Inert Gas (TIG) surfacing of duplex cast steel on its hardness and structure. The samples of 24Cr-5Ni-2.5Mo ferritic-austenitic cast steel were subjected to single-overlay processes with the use of solid wire having the chemical composition similar to that of the duplex cast steel. As a result of the surfacing, the welds were obtained that had no welding imperfections with a smooth transition to the base material. In the test without the heat treatment, directly below the fusion line, we observe a ferrite band with a width of approximately 200 m without visible austenite areas. Some of the samples were then solution treated (1060°C). Both variants, without and after solution heat treatment, were subjected to testing. Significant changes in the microstructure of the joint were observed after the heat treatment process (heat affected zone and weld microstructure changes). In both areas, an increase in the austenite volume fraction after solution heat treatment was observed. Changes in the microhardness of the ferrite in the HAZ area directly below the fusion line were also observed.

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“…It causes changes in the microstructure of the top surface. With regard to the applied cooling gas, broken martensite can be obtained [1,7].…”

Section: Introductionmentioning

confidence: 99%

Wear Resistance of Steel 20MnCr5 After Surfacing with Micro-jet Cooling

Węgrzyn¹,

Tarasiuk²,

Piwnik³

et al. 2016

Archives of Foundry Engineering

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This paper presents results of experimental research concerning the impact of an innovative method of micro-jet cooling on the padding weld performed with MIG welding. Micro-jet cooling is a novel method patented in 2011. It enables to steer the parameters of weld cooling in a precise manner. In addition, various elements which may e.g. enhance hardness or alter tribological properties can be entered into its top surface, depending on the applied cooling gas. The material under study was steel 20MnCr5, which was subject to the welding process with micro-jet cooling and without cooling. Nitrogen was used as a cooling gas. The main parameter of weld assessment was wear intensity. The tests were conducted in a tribological pin-on-disc type position. The following results exhibit growth at approximately 5% in wear resistance of padding welds with micro-jet cooling.

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Microstructure and Abrasive Wear Resistance of 18Cr-4Ni-2.5Mo Cast Steel

Cited by 4 publications

References 4 publications

Exploratory Data Analysis for the Evaluation of Tribological Properties of Wear-Resistant Surface Layers Modified with Rare-Earth Metals

Exploratory Data Analysis for the Evaluation of Tribological Properties of Wear-Resistant Surface Layers Modified with Rare-Earth Metals

Archives of Foundry Engineering

Wear Resistance of Steel 20MnCr5 After Surfacing with Micro-jet Cooling

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