Fe–W–C thermodynamics and in situ preparation of tungsten carbide-reinforced iron-based surface composites by solid-phase diffusion

Zhong, Lisheng; Zhang, Xi; Chen, Shili; Xu, Yunhua; Wu, Hong; Wang, Juan

doi:10.1016/j.ijrmhm.2016.02.001

Cited by 37 publications

(10 citation statements)

References 22 publications

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“…Therefore, it was feasible for the reaction direction and product of the welding pool to be qualitatively studied. [19][20][21][22][23] . By setting the welding pool as the system, the surrounding atmosphere and base metal were considered the environment.…”

Section: Phase Constitutionmentioning

confidence: 99%

Effect of Ti Addition on Phase Constitution and Wear Resistance of Fe–B–C Hypereutectic Overlays Produced Using Powder-Wire Composite Arc Welding

Zhuang

Jun

et al. 2017

Mater. Trans.

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The effects of the addition of small amounts of Ti on the phase constitution, microstructure, and wear resistance of Fe-B-C hypereutectic overlays produced using powder-wire composite arc welding were investigated. The Fe-B-C hypereutectic overlay phase consisted of TiB 2 and TiC in addition to Fe and Fe 2 B with the addition of Ti. The addition of Ti inhibited growth of the Fe 2 B and Fe 3 (C,B) phases. When the Ti content reached 0.918 mass%, the daisy-like Fe 3 (C,B) phases disappeared, and precipitation of dispersed TiB 2 and TiC began, which improved the wear resistance. Overlays without macroscopic cracks could be obtained. The wear mode of the Fe-B-C hypereutectic overlay changed from a mixture of microcutting and microfracture wear to microcutting wear.

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Section: Phase Constitutionmentioning

confidence: 99%

Effect of Ti Addition on Phase Constitution and Wear Resistance of Fe–B–C Hypereutectic Overlays Produced Using Powder-Wire Composite Arc Welding

Zhuang

Jun

et al. 2017

Mater. Trans.

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“…The molten alloy activates the reaction between the reactants introduced into the mold, and reinforcement particles such as vanadium carbide (VC) [5] and tungsten carbide (WC) [6,7] are formed directly in the casting. Zhong et al [8] reported a method of producing WC reinforcement on the surface of an iron matrix based on a W plate introduced into a mold cavity, which is then filled by a liquid alloy. The composite's surface is formed with solid-phase diffusion during the heat treatment of the ready casting part.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Fe Addition on Fragmentation Phenomena, Macrostructure, Microstructure, and Hardness of TiC-Fe Local Reinforcements Fabricated In Situ in Steel Casting

Olejnik

Tokarski

Sikora

et al. 2018

Metall Mater Trans A

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The dependences of the macro-and microstructures as well as the hardness of local TiC-Fe-type reinforcements (LR) fabricated in situ in steel casting using compacts containing different contents of TiC reactants and the addition of an Fe moderator have been investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Vickers hardness (HV) tests. Five powder mixtures were selected for compact preparation; one of them contains only TiC reactants, while the other four contain TiC reactants as well as 10, 30, 50, and 70 wt pct Fe moderator additions, respectively. Next, the ready compacts were introduced to the mold cavity and poured by cast steel for the in situ LR fabrication. This is the first time, through this study, that the fragmentation phenomena was revealed by macrostructural observations of the LR produced with only the TiC reactants. The increasing Fe content gradually limited the fragmentation and infiltration processes and stabilized the dimensions of the LR. With the increasing contents of the Fe moderator, the refinement of the TiC particles in the LR was observed. Due to the limited infiltration process and high surface content of the TiC, the LR produced with 30 wt pct Fe exhibited the greatest hardness.

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“…Although ceramic reinforced light metal matrix (Al, Ti or Mg) composites are being studied intensively, ceramic reinforced ferrous metal matrix composites are also investigated [1][2][3][4][5][6]. With the addition of ceramicbased particles such as carbides and borides into the iron-based matrix, abrasion resistance and material strength increase [7][8][9]. For example, steel matrix composites reinforced with ceramic particles as a protection against wear and corrosion are recommended in chemical and processing industries [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and wear of iron-based hardfacings reinforced with in-situ synthesized TiB2 particles

Kaptanoğlu¹,

Eroğlu²

2017

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In this study, four hardfacings, reinforced with in-situ synthesized TiB2 particles, were cladded by tungsten inert gas (TIG) welding, applying flux-cored wires with varying Fe-Ti and Fe-B content. Microstructural examination, macrohardness and microhardness measurements and abrasive wear tests were performed. Morphology of TiB2 changed from a small-sized hexagonal and rectangular to a coarse plate-like one with the increasing common proportion of titanium and boron. Accordingly, hardness and wear resistance increased linearly with the changing titanium and boron content in hardfacings.K e y w o r d s: TiB2, wear, microstructure, hardfacing, flux-cored wire

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Fe–W–C thermodynamics and in situ preparation of tungsten carbide-reinforced iron-based surface composites by solid-phase diffusion

Cited by 37 publications

References 22 publications

Effect of Ti Addition on Phase Constitution and Wear Resistance of Fe–B–C Hypereutectic Overlays Produced Using Powder-Wire Composite Arc Welding

Effect of Ti Addition on Phase Constitution and Wear Resistance of Fe–B–C Hypereutectic Overlays Produced Using Powder-Wire Composite Arc Welding

The Effect of Fe Addition on Fragmentation Phenomena, Macrostructure, Microstructure, and Hardness of TiC-Fe Local Reinforcements Fabricated In Situ in Steel Casting

Microstructure and wear of iron-based hardfacings reinforced with in-situ synthesized TiB2 particles

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