Effects of titanium additive on microstructure and wear performance of iron-based slag-free self-shielded flux-cored wire

Liu, Dashuang; Liu, Renpei; Wei, Yanhong

doi:10.1016/j.surfcoat.2012.07.078

Cited by 30 publications

(19 citation statements)

References 13 publications

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“…Jilleh [14] reported that additions of Ti to the Fe-Cr-C based flux -cored wire prevents chromium carbides formation due to the formation of uniformly dispersed TiC inclusions in the steel matrix. Similar features of TiC grains formation were observed after FCAW with flux of Fe-Cr-C-B system with Ti additions [15]. For alloying the Fe-Ti-C system researchers more often uses Mo [16], Nb [17] and V [17].…”

Section: Literature Reviewsupporting

confidence: 60%

Improvement of Abrasion Resistance of Production Equipment Wear Parts by Hardfacing with Flux-Cored Wires Containing Boron Carbide/Metal Powder Reaction Mixtures

Ivanov

Prysyazhnyuk

Lutsak

et al. 2020

Management Systems in Production Engineering

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In this work was established that serial traditional hardfacing materials based on the Fe-Cr-C system are not effective for improvement of abrasion resistance of elements of equipment for production of bricks, solid fuel briquettes and for restoration of augers, due to the fact that this equipment works at significant specific and cyclic loads. Features of the coarse-grained structure of Fe-Cr-C based coatings leads to intensive abrasive wear. The aim of this study was to increase a durability of that equipment by using of flux cored electrodes with reaction components of Ti, Cr, Mo, B4C and their combinations to provide synthesis, which leads to fine-grained structure of refractory borides and carbides and their solid solutions with increased hardness. Structure of the hardfacing coatings were investigated by method of metallography, scanning electron microscopy (SEM), electron backscatter diffraction (BSD) mode and energy dispersive X-ray spectroscopy (EDS). Temperature dependences of equilibrium phase amount of the hardfacing materials were calculated by the CALPHAD technique, using JMatPro software. It was investigated that the offered materials are characterized by higher wear resistance at high specific and cyclic loads in comparison with serial production high-chromium hardfacing materials (Lastek, ESAB, Paton IEW). It was established that the abrasion wear resistance at high specific and cyclic loads depends mostly of formation of the structure of hardfacing material, and not the hardness. Also, using of powders of pure metals and their combination as reaction mixture for FCAW leads to fine structure which contains of refractory borides and carbides and their solid solutions.

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Section: Literature Reviewsupporting

confidence: 60%

Improvement of Abrasion Resistance of Production Equipment Wear Parts by Hardfacing with Flux-Cored Wires Containing Boron Carbide/Metal Powder Reaction Mixtures

Ivanov

Prysyazhnyuk

Lutsak

et al. 2020

Management Systems in Production Engineering

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show abstract

“…Solidification of the hardfacing alloy with 0.13 wt-% nickel began with the nucleation of primary M 7 (C, B) 3 carbides from the liquid at approximately 1149°C (Ref. 13). The formation of primary M 7 (C, B) 3 carbides was followed by the eutectic reaction at which eutectic M 3 (C, B) carbides and eutectic austenite were simultaneously formed.…”

Section: Methodsmentioning

confidence: 99%

“…In contrast, the metal-cored wire is conveniently employed to obtain the iron-based hardfacing alloy with a hypereutectic microstructure (Refs. [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…To increase the powder-filling coefficient of flux-cored wires, we have developed a new type of iron-based, slag-free, self-shielded metal-cored wire that comprises a metal sheath filled almost entirely with powdered metal alloys (Refs. 8,9,13,16,17). The elements W (Ref.…”

Section: Introductionmentioning

confidence: 99%

“…9), Ti (Ref. 13), and Nb (Ref. 17) have been added into the cored wire to improve the fraction of carbides, which improves the wear resistance of iron-based hardfacing alloys.…”

Section: Introductionmentioning

confidence: 99%

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Development of Nickel-Added, Iron-Based, Slag-Free, Self-Shielded Metal-Cored Wire

2018

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Previously, an iron-based, slag-free, self-shielded metalcored wire showing a mechanism of porosity prevention was reported in the Welding Journal (Ref. 1). In this paper, a type of iron-based, slag-free, self-shielded metal-cored wire with various nickel contents was developed to fabricate experimental hardfacing alloys. The influence of nickel addition on the microstructure and wear performance was investigated. The results showed the hardfacing alloy with 0.13 wt-% nickel had a typical hypereutectic microstructure consisting of primary M 7 (C, B) 3 carbonitrides with a eutectic of long, bar-like M 3 (C, B) carbonitrides and martensite. The addition of nickel promoted the formation of austenite dendrites as well as changed the morphology of the eutectic colonies. As the nickel content increased from 2.75 to 3.83 wt-%, and to 4.64 wt-%, the austenite was observed to develop from a scattered structure to a dendritic structure, and, finally, to a networked structure, respectively. The hardness of the hardfacing alloy was found to decrease from 64.2 HRC with 0.13 wt-% nickel to 58.2 HRC with 4.64 wt-% nickel. The morphology of the worn surfaces of the hardfacing alloys showed cracks in the hardfacing alloy with 0.13 wt-% nickel; a smooth texture for the hardfacing alloy with 2.75 wt-% nickel; and extensive plastic deformation and grooving as the nickel content was further increased. The optimum wear resistance and cracking resistance of the 2.75 wt-% nickel hardfacing alloy can be attributed to the presence of a higher fraction of martensite in the matrix, and an optimum amount of retained austenite needed to provide crack resistance.

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Alkaline corrosion resistance of slag‐free self‐shielded titanium‐added metal‐cored welding overlay

Liu

Long

et al. 2023

Materialwissenschaft Werkst

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The corrosion resistance of slag‐free self‐shielded metal‐cord welding overlay with different ferrotitanium additions in alkaline solution (pH=14) was investigated. The results show that the self‐corrosion potential Ecorr is the highest and the self‐corrosion current density Icorr is the minimum when the addition of ferrotitanium is 6 wt. %. titanium carbide corrodes before other carbides in alkaline solution due to the absence of iron. A ferrotitanium addition of 6 wt. % can provide the best corrosion resistance to the fabricated welding overlays, as an increased ferrotitanium addition will result in a decrease in chromium carbide and an increase in titanium carbide, of which titanium carbide is the most prone to corrosion, followed by chromium carbide, and finally the austenitic matrix.

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Effects of titanium additive on microstructure and wear performance of iron-based slag-free self-shielded flux-cored wire

Cited by 30 publications

References 13 publications

Improvement of Abrasion Resistance of Production Equipment Wear Parts by Hardfacing with Flux-Cored Wires Containing Boron Carbide/Metal Powder Reaction Mixtures

Improvement of Abrasion Resistance of Production Equipment Wear Parts by Hardfacing with Flux-Cored Wires Containing Boron Carbide/Metal Powder Reaction Mixtures

Development of Nickel-Added, Iron-Based, Slag-Free, Self-Shielded Metal-Cored Wire

Alkaline corrosion resistance of slag‐free self‐shielded titanium‐added metal‐cored welding overlay

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