Microstructure and wear properties of Fe–VC–Cr7C3 composite coating on surface of cast steel

Cheng, Fengjun; Wang, Yisan; Ting-gui, Yang

doi:10.1016/j.matchar.2007.03.002

Cited by 41 publications

(18 citation statements)

References 10 publications

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“…As a result, chromium carbides are often used in surface coatings, which are of great technological importance in the cutting tool industries [3,4]; meanwhile, it is well known that chromium carbides play a significant role in the Fe-Cr-C alloys as the precipitated carbides [5]. Therefore, more and more experimental and theoretical researches have been conducted.…”

Section: Introductionmentioning

confidence: 99%

The electronic, mechanical properties and theoretical hardness of chromium carbides by first-principles calculations

Gao

Xiao

et al. 2011

Journal of Alloys and Compounds

248

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Section: Introductionmentioning

confidence: 99%

The electronic, mechanical properties and theoretical hardness of chromium carbides by first-principles calculations

Gao

Xiao

et al. 2011

Journal of Alloys and Compounds

248

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“…Vanadium did not significantly widen the solidification gap, at least for the hypereutectic composition, 9 Evolution of friction coefficient of reference alloy (V0) and of near-eutectic (V3) and hypoeutectic (V5) V-rich alloys a reference alloy V0; b alloy V3; c alloy V5 10 Views (SEM) collected by backscattered electron signal of wear tracks of materials tested after sliding distance of 300 m which is a desired requisite for the limitation of solidification cracking during casting processes. V alloying allowed increasing the hardness due to the contribution of V-rich carbides and to the conversion of the matrix into a bainitic-martensitic structure.…”

Section: Discussionmentioning

confidence: 77%

“…1 In particular, it has been shown that V is a strong carbideforming element, producing MC type phases characterised by high hardness. 9,10 It was also stated that V has a high solubility in c-Fe solid solution and in other M 3 C and M 7 C 3 carbides. 5,11 Moreover, limited amounts of V in Fe-Cr-C alloys, revealed to have relatively low effects on the solidification behaviour.…”

Section: Introductionmentioning

confidence: 99%

Effect of vanadium on microstructure and wear behaviour of Fe based C–B–Ni hardfacing alloy

Rovatti

Casati

Emami

et al. 2015

International Journal of Cast Metals Research

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To investigate the influence of chemical compositions of different hardfacing alloys on wear performance experimental high vanadium Fe-C-B-Ni alloys in the form of blended powders have been cast in a laboratory furnace and analysed in three configurations: hypereutectic, neareutectic and hypoeutectic. The solidification behaviour was defined by differential scanning calorimetry while the main microstructural features were characterised by microscopy, X-ray diffraction and microhardness as well as pin-on-disc wear tests. Fe-V rich powders to an originally hypereutectic Fe-C-B-Ni alloy induced the shift to hypoeutectic solidification and promoted the presence of larger quantities of hard V-rich carbides. The new V-bearing alloys showed higher wear performance and higher bulk hardness than the reference alloys. The improved wear properties were mainly due to the precipitation of fine globular V-rich carbides that effectively reinforced the structure without any evidence of pullout and cracking of the smaller particles.

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“…In this paper, high-carbon ferrochrome was added to the Ni45 alloy, and as a result more chromium carbides could form due to the high Cr content of high-carbon ferrochrome. After the laser cladding process, the carbides were usually found to be Cr 7 C 3 and Cr 23 C 6 [15][16][17]. Such hard phases are very brittle, making the matrix alloy less ductile and more susceptible to the high thermal stress imposed by the high thermal gradients and high solidification rates associated to the laser cladding process [18,19].…”

Section: Experimental Materials and Proceduresmentioning

confidence: 99%

Microstructure and Wear Behavior of Laser Cladded Ni45 + High-Carbon Ferrochrome Composite Coatings

Chen

et al. 2020

Materials

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A composite coating with enhanced mechanical properties including high hardness and excellent wear resistance was produced by laser cladding of mixed Ni45 and high-carbon ferrochrome powders on an ASTM 1045 steel substrate. Different quantities, ranging from 10 to 50 wt.% of high-carbon ferrochrome powder were added to the Ni45 powder to investigate the effect of mixture content on the cladding performance. The microstructure of the coatings were examined using scanning electron microscope, and the wear resistance was compared using a wear tester apparatus among the different cases. The results showed that the microstructure of the coating with 30 wt.% high-carbon ferrochrome content was mainly fine solid solution phase. With the increase of high-carbon ferrochrome content to 40 wt.% and above, cracks appeared on the cladding surface due to a large amount of chromium carbides formed during the process. The microhardness was enhanced remarkably by laser cladding the composite coating on the 1045 substrate, with 2.4 times higher than the hardness of the substrate when 30 wt.% high-carbon ferrochrome content was added. The best wear performance was achieved when the high-carbon ferrochrome content was 30 wt.%, demonstrating the smallest surface roughness and depth of wear marks. With further increased high-carbon ferrochrome content, microcracking and delamination were observed on the worn surfaces.

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Microstructure and wear properties of Fe–VC–Cr7C3 composite coating on surface of cast steel

Cited by 41 publications

References 10 publications

The electronic, mechanical properties and theoretical hardness of chromium carbides by first-principles calculations

The electronic, mechanical properties and theoretical hardness of chromium carbides by first-principles calculations

Effect of vanadium on microstructure and wear behaviour of Fe based C–B–Ni hardfacing alloy

Microstructure and Wear Behavior of Laser Cladded Ni45 + High-Carbon Ferrochrome Composite Coatings

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