Effects of flux-cored arc welding technology on microstructure and wear resistance of Fe-Cr-C hardfacing alloy

Tippayasam, Chayanee; Taengwa, Chaiyanan; Palomas, Jednupong; Siripongsakul, Thamrongsin; Thaweechai, Thammanoon; Kaewvilai, Attaphon

doi:10.1016/j.mtcomm.2023.105569

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…This increase in the chromium carbide density within the grains is the difference's reason in the hardness values between samples number 1 and 2. The high chromium carbides alloyed hardfacing sample is used for surfacing on parts made of carbon steel, cast steel or Mn-steel, which are subject to grinding wear, such as idlers, digging buckets, digging teeth, ploughshares, mixing wings and conveyor screws [45]. Graphite formation resulting from increased carbon in the metal matrix in sample number 4 was detected in Fig.…”

Section: Resultsmentioning

confidence: 99%

Investigation of the alloying elements effect in the flux-cored wire and submerged arc welding flux combination

Özkan

2024

Journal of Scientific Reports-A

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In this study, it was aimed to investigate hardfacing weld metals’ metallurgical and mechanical properties produced by flux-cored wire and submerged arc welding flux combinations. The usage of the combination for these two methods, which are generally preferred separately, distinguishes this research from other similar studies. In the first stage, the optimum production conditions and physical properties of the submerged arc welding fluxes were determined and then flux-cored wire manufacturing details have been defined. Agglomerated submerged arc welding fluxes and seamed type flux-cored welding wires samples were investigated according to the changing carbon, chromium, niobium, and wolfram ratios, while manganese and silicon values were kept constant. Five different samples have been prepared with this purpose, and the hardness test, wear test, microstructure analysis, chemical analysis, and X-Ray diffraction analysis were carried out respectively. It was observed that the increase in hardness affects the wear resistance directly. The effect of chemical analyses on the microstructure has also been determined. Moreover, while the increasing amount of chromium carbide clearly changed the microstructure, and the addition of refractory metals enabled the formation of the eutectic and dendritic structure. The problems of low efficiency in flux-cored wire and inability to alloy in submerged arc welding flux were solved with this method. Therefore, the production of hardfacing consumables via submerged flux-cored arc welding combination method was achieved firstly by using domestic raw materials, and one TUBITAK project and one PhD thesis were successfully finished with these data.

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Section: Resultsmentioning

confidence: 99%

Investigation of the alloying elements effect in the flux-cored wire and submerged arc welding flux combination

Özkan

2024

Journal of Scientific Reports-A

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“…The study of the structural characteristics following the deposition of specimens with austenitic-nickel wire for the buffer layer and Fe-Cr-C for the deposited layer, as well as wear resistance tests are presented in [7]. During the deposition process, the method used is arc welding in a protective gas environment with a consumable electrode.…”

Section: Introductionmentioning

confidence: 99%

Investigations of Wear Resistance of Hardfaced Layers on Steel 40X

Argirov,

Mechkarova,

Luckanov

et al. 2024

TEM Journal

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The article discusses a fundamental problem in the shipbuilding industry related to the repair of critical and expensive components directly related to the operation of ships in the global fleet. Methodology and technology for repair by welding of workpieces made of 40X steel have been developed and applied. Hardfacing electrodes of the brands OK 83.28 and OK 61.20 were used. The developed welding technologies include both buffered and non-buffered layers. For one of the specimens, preheating to a temperature of 200 degrees Celsius was performed, which proved to be optimal for the metal. The measured macro stresses are below the elastic limit of the examined metal. The measured residual stresses are insignificant at +62 MPa. The microhardness results show an increase in microhardness to about 450HV in the weld metal zone. The dry friction wear test performed on the welded layer showed a relatively uniform metal loss in both specimens due to the slight increase in temperature.

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“…To prevent sinking under severe load circumstances, the buttering layer must be made of a material with strong fracture resistance and compatibility with both the hard surface layer and the base metal. Because of these favourable qualities, austenitic stainless steels are a common material for use as a buttering layer [16]. The austenitic stainless steels have a rather large dilution effect, which is a drawback.…”

Section: Introductionmentioning

confidence: 99%

Microstructural analysis of martensitic hard surfacing on low chromium alloy steel

Oo,

Muangjunburee,

Abd Rahim

et al. 2023

Materialwissenschaft Werkst

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This study focuses on the metallurgical characterization of single and multi‐layer martensitic hard surfacing onto non‐standardized low‐chromium alloy steel with a single buttering layer using an automatic submerged arc welding process as a standard reference. The metallurgical properties of hard surfaced samples are examined using an optical microscope, energy dispersive x‐ray spectroscopy, and x‐ray diffractometer. Micro‐Vickers hardness testing is also conducted to analyze and confirm the metallographic results of hard surfacing. The current study finds that the microstructure of each region is influenced by three key factors: chemical composition, heat input, and dilution. The structural type is determined by the chemical composition of materials, heat input influences the structural characteristics in the heat‐affected zone (needle‐shape martensite and tempered martensite), and dilution affects the structural characteristics of the hard surfacing layers (martensite with retained austenite). Comparing multi‐layer hard surfacing to single‐hard surfacing, the hardness values of the heat‐affected zone of the multi‐layer hard surfacing are greatly reduced, while the hardness values of the hard surfacing layers are raised.

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Effects of flux-cored arc welding technology on microstructure and wear resistance of Fe-Cr-C hardfacing alloy

Cited by 4 publications

References 15 publications

Investigation of the alloying elements effect in the flux-cored wire and submerged arc welding flux combination

Investigation of the alloying elements effect in the flux-cored wire and submerged arc welding flux combination

Investigations of Wear Resistance of Hardfaced Layers on Steel 40X

Microstructural analysis of martensitic hard surfacing on low chromium alloy steel

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