Erosive wear of hardfaced Fe–Cr–C alloys at elevated temperature

Katsich, Christian; Badisch, E.; Roy, Manish; Heath, G.R.; Franek, F.

doi:10.1016/j.wear.2009.03.004

Cited by 50 publications

(22 citation statements)

References 15 publications

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“…3. Volumetric erosion in multiphase materials is generally higher at 90°impact compared with oblique impact for all the impact energies since generally at 90°impact, a higher percentage of the particle energy is transmitted into the material [27]. The critical impact energy is detected to be approximately 0.2 mJ where a significant increase in volumetric erosion can be observed.…”

Section: Ht-erosion Test Results and Discussionmentioning

confidence: 85%

Wear Mechanisms at High Temperatures: Part 2: Temperature Effect on Wear Mechanisms in the Erosion Test

et al. 2009

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In previous investigations on wear mechanisms at high temperatures made in High Temperature-Single Impact Test (HT-SIT) and High Temperature-Continuous Impact Abrasion Test (HT-CIAT), predominant wear mechanisms were identified and correlations to different material parameters could be presumed. In order to confirm these correlations, four different alloys which are promising to be used in high temperature applications like a sinter grate have been studied in the High Temperature-Erosion Test (HT-ET) by the use of different impact angles and different impact energies. Especially the change of wear mechanism caused by increasing testing temperature was analysed in detail. Characterisation of microstructure and wear behaviour has been done by optical microscopy (OM) and scanning electron microscopy (SEM). Results obtained by the use of the different measurement techniques were linked and set into comparison to calculate the volumetric wear of the specimen. Predominant wear mechanisms were determined using OM in the mode of cross-section images and SEM. The results indicate that material parameters such as hardness and hard phase content can be correlated to the erosion wear rates at different impact angles. The test results indicate that at higher temperatures, the material fatigue becomes a major wear-determining factor. The test results also confirmed that there is a critical impact energy for each material above where the wear rate increases significantly. Test results with thermally aged materials also show that a better heat-resistant matrix reduces the material fatigue thus resulting in lower wear rates.

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Section: Ht-erosion Test Results and Discussionmentioning

confidence: 85%

Wear Mechanisms at High Temperatures: Part 2: Temperature Effect on Wear Mechanisms in the Erosion Test

et al. 2009

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“…Katsich et al [102] designed two different types of hardfacing alloys of Fe-Cr-C incorporating Nb, Mo and B to ensure improved erosion performances at elevated temperature. Mild steel was hardfaced with these alloys under optimised gas metal arc welding (GMAW) condition.…”

Section: Erosive Wearmentioning

confidence: 99%

“…Higher varieties of satellites are used for saw teeth, rotary slitters, cutting edges of knives of carpet, [102] paper, plastic industries. Stellite 701, 704, 706, etc., are employed for superior wear corrosion applications such as tricone rock bits of oil drilling industries.…”

Section: Application Of Hardfacing Surfacesmentioning

confidence: 99%

“…Bucket wheel excavator teeth, shovel teeth, dragline teeth, dragline chain, dragline pins, undercarriage parts, dozer link pads, etc., are hardfaced with these materials in surface mining industry. For deep mining [102] activity, longwall miners, continuous miners, feeders beakers, cutter drums, crushing hammer, conveyer parts wear parts, etc., are hardfaced with WC-Co. Chutes, hammers, crushers, grinding, pulverising, wear parts and screw conveyers are some implements that are hardfaced with WC-Co. In construction industry, ground engaging tools, cutting edges, dozer blades, grader blades, trencher teeth, tunnelling equipment, wear parts, augers, dozer undercarriage parts, horizontal directional drilling equipment, etc., are hardfaced.…”

Section: Application Of Hardfacing Surfacesmentioning

confidence: 99%

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Hardfacing for Wear, Erosion and Abrasion

Badisch

Roy

2013

Surface Engineering for Enhanced Performance Against Wear

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Weld overlay coatings also known as hardfacing is a method which involves solidification for applied coatings. This method is as old as welding process and was first applied by J.W. Spencer in 1896. This technique offers unique advantages over other processes in that the overlay/substrate weld provides a metallurgical bond which is not susceptible to spallation and can easily be applied free of porosity and other defects. Weld deposits can have a thickness as high as 10 mm. Hardfacing process can be carried out easily even in on site. The process is also extremely versatile as a large variety of materials can be deposited for protection against degradation.Weld overlay coatings can be classified under four different categories. These are (1) surface cladding where a thick layer of materials is applied and the overlay layer can have completely different composition from the substrate, (2) hardfacing where a materials more resistant to degradation is applied with good metallurgical bonding and the composition can be close in terms of composition to that of the substrate, (3) build up where a weld deposit is applied to restore the original dimension of the component and the composition of the build layer is exactly similar to that of the substrate and (4) buttering where an intermediate layer is deposited before applying the final coating.The materials used for hardfacing should have melting point close to or lower than the substrate materials. During hardfacing, the temperature of the coating

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“…Typische Anwendungs beispiele hierfür sind Zerkleinerungseinrichtungen für Sinterkuchen in der Stahlindustrie oder Förder-schnecken. Auch ist durch die erhöhte Anwendungstemperatur der Einfluss von Oxidation auf die Verschleißteile zu berücksichtigen [1][2][3] …”

Section: Introductionunclassified