Phase evolution and wear resistance of in situ synthesized V8C7 particles reinforced Fe-based coating by laser cladding

Wang, C.; Zhang, S.; Zhang, C.H.; Wu, Chuan; Zhang, J.B.; Abdullah, Adil O.

doi:10.1016/j.optlastec.2018.02.019

Cited by 56 publications

(9 citation statements)

References 40 publications

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“…The microhardness exhibits a salient downward trend because of the large temperature gradient at the top of coating during solidification and the dense structure formed by the rapid crystallization. Therefore, the hardness at the top of the coating is large, reaching 950 HV 0.2 [ 21 ]. As observed from Figure 5 b, in terms of the hardness in the middle of coating, the average coating hardness is the highest when the intensity of alternating magnetic field reaches 40 mT, while the average hardness is the lowest in the absence of the intensity of the alternating magnetic field.…”

Section: Resultsmentioning

confidence: 99%

Study on Microstructure and Properties of Ni60A/WC Composite Coating by Alternating-Magnetic-Field-Assisted Laser Cladding

et al. 2022

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Ni60A/WC composite coating is prepared on 45 steel substrate by alternating-magnetic-field-assisted laser cladding. We compare the effects of different magnetic field intensity on WC particle distribution, microstructure, phase composition, microhardness and wear; in addition, the mechanism of alternating magnetic fields on cladding layers is briefly analyzed. The results show that an alternating magnetic field can significantly homogenize the distribution of WC particles. WC particles at the bottom are stirred and dispersed to the middle and upper area of the laser pool. The distribution of WC in the bottom region 6 of the coating decreases from 19.1% to 10%, the distribution of WC in the bottom region 5 decreases from 46.46% to 33.3%, the WC distribution in the top region 1 of the coating increases from 0 to 7.7% and the WC distribution in the top region 2 of the coating increases from 8.08% to 12.2%. The stirring of alternating magnetic fields strengthens the solute convection in the laser pool, refines the snowflake-shaped carbide hard phase and improves the coating microhardness and wear property, and adhesive wear and abrasive wear decrease gradually with increasing magnetic field strength.

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Section: Resultsmentioning

confidence: 99%

Study on Microstructure and Properties of Ni60A/WC Composite Coating by Alternating-Magnetic-Field-Assisted Laser Cladding

et al. 2022

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“…The vanadium-carbon ratio in vanadium carbide changed from 2:1 to 8:7, resulting in the formation of V 8 C 7 phase in S4. Wang et al [26] studied possible chemical reactions in molten pools and changes in standard Gibbs free energy. The results showed that Coatings 2019, 9, 467 5 of 14 V 8 C 7 was heterogeneous nucleation center, and Cr 7 C 3 with lower melting point was attached to V 8 C 7 with higher melting point (2810 • C [27]).…”

Section: Methodsmentioning

confidence: 99%

“…It has been shown that the primary carbides in high-carbon Cr-based alloys were (Cr, Fe) 23 C 6 and (Cr, Fe) 7 C 3 with hexagonal structure [28]. For Cr 23 C 6 and Cr 7 C 3 with orthogonal structure, the Gibbs free energy of Cr 23 C 6 was lower [26]. For chromium carbide, the orthogonal structure was more stable than the hexagonal structure when the concentration of Fe was more than 40 at.…”

Section: Methodsmentioning

confidence: 99%

Preparation and Characterization of In Situ Carbide Particle Reinforced Fe-Based Gradient Materials by Laser Melt Deposition

Zong

Zhang

et al. 2019

Coatings

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To obtain the wear-resistant camshaft with surface rigidity and core toughness and improve the service life of camshaft, wear-resistant Fe-based alloy gradient material was prepared by laser melt deposition. The traditional camshaft was forged by 12CrNi2V. In this paper, four types of wear-resistant Fe-based powders were designed by introducing various content of Cr3C2 and V-rich Fe-based alloy (FeV50) into stainless steel powder. The results showed that the gradient materials formed a satisfactory metallurgical bond. The composition of the phases was mainly composed of α-Fe, Cr23C6, and V2C phases. The increasing of Cr3C2 and FeV50 led to transform V2C into the V8C7. The microstructures were mainly cellular dendrite and intergranular structure. Due to the addition of Cr3C2 and FeV50, the average microhardness and wear resistance of gradient materials were significantly better than that of 12CrNi2V. The sample with 8% V had the highest microhardness of 853 ± 18 HV, which was 2.6 times higher than that of 12CrNi2V. The sample with 6% V had the best wear resistance, which was 21 times greater than that of 12CrNi2V.

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“…Hence, Fe-based coatings attract more and more attention due to their low cost and high performance [15]. Many scholars have studied the improvement of wear resistance of materials by Fe-based coatings via laser cladding [16]. W.J.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Microstructure and Wear Behavior of Laser-Cladded High Aluminum and Chromium Fe-B-C Coating

Chang

et al. 2020

Materials

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In this study, a high aluminum and chromium Fe-B-C coating was prepared using laser cladding on 2Cr13 steel substrate. The microstructure, microhardness, and wear resistance of the high aluminum and chromium Fe-B-C coating were investigated. The results show that this dense coating possesses good metallurgical bond with the substrate. The microstructure is mainly composed of α-(Fe, Cr, Al) lath martensite, orthorhombic M2B boride, orthogonal M3C2, and orthorhombic M7C3 carbides. The microhardness of the coating can reach 620 HV which is 3.3-times higher than that (190 HV) of the substrate. The coating shows a lower friction coefficient of 0.75 than that of the substrate (1.08). The wear rates of the substrate and the coating are 0.295 mg/min and 0.103 mg/min, respectively, indicating the coating exhibits excellent wear resistance. The wear mechanism transforms severe adhesive wear and abrasive wear of the substrate to slight abrasive wear of the coating. The results can provide technical support to improve the properties of the Fe-based laser cladded coating.

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Phase evolution and wear resistance of in situ synthesized V8C7 particles reinforced Fe-based coating by laser cladding

Cited by 56 publications

References 40 publications

Study on Microstructure and Properties of Ni60A/WC Composite Coating by Alternating-Magnetic-Field-Assisted Laser Cladding

Study on Microstructure and Properties of Ni60A/WC Composite Coating by Alternating-Magnetic-Field-Assisted Laser Cladding

Preparation and Characterization of In Situ Carbide Particle Reinforced Fe-Based Gradient Materials by Laser Melt Deposition

Investigation on the Microstructure and Wear Behavior of Laser-Cladded High Aluminum and Chromium Fe-B-C Coating

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