Estratégias para o Desenvolvimento de Revestimentos Resistentes ao Desgaste: Uma Revisão

Pintaúde, Giuseppe

doi:10.1590/0104-9224/si26.16

Cited by 3 publications

(3 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This increase in carbides should influence the wear resistance of the coating for the thicker substrate in all test conditions, but the abrasive wear test results did not show a significant difference for the most severe test conditions. As indicated in the literature [18], there is a tendency to increase the abrasion resistance with the increase in the number of carbides. On the other hand, if the precipitates have a low level of cohesion with the matrix, they can quickly come off and act as abrasive particles [57,58].…”

Section: Wear Ratesmentioning

confidence: 73%

“…Abrasion-resistant metal alloys often contain carbide-forming alloying elements, which improve performance, resulting in alloys with greater hardness and strength [18]. Metal alloys in powder form, based on iron, chromium, and carbon (Fe-Cr-C), deposited by PTA onto stainless steel substrates, have been studied to improve wear resistance [19] or to investigate microstructural characteristics of the coatings [20].…”

Section: Of 18mentioning

confidence: 99%

See 1 more Smart Citation

The Effect of the Dilution Level on Microstructure and Wear Resistance of Fe-Cr-CV Hardfacing Coatings Deposited by PTA-P

et al. 2022

Self Cite

View full text Add to dashboard Cite

Soil preparation tools are subject to severe abrasion. The wear resistance of various industrial components can be improved using the hardfacing technique. The improvement in hardfacing wear resistance depends on the microstructure, i.e., the chemical composition of the alloys, the method of overlay, and the parameters of the selected process. The Plasma Transferred Arc with Powder (PTA-P) welding process is interesting as a hardfacing technique since it promotes very low dilution of the substrate in the coating. In this article, the PTA-P welding process was used for the deposition of Fe-Cr-C-based hard coatings with the addition of vanadium onto cheap and relatively soft low-carbon steel substrates. Rubber-wheel abrasion tests were performed to compare the abrasion resistance between commercial anti-wear steel and weld-deposited Fe-Cr-C-V hard coatings. In addition, the microstructure, dilution, and wear mechanisms were investigated. The dilution of the coatings affected the microstructure, in particular, the free mean path of the vanadium carbides, but it only affected abrasion resistance when the wear mechanism involved rolling abrasion. The deposited coatings proved to be at least three times stronger than a commercial abrasion-resistant steel due to the distribution and morphology of the vanadium carbides formed in the coatings.

show abstract

Section: Wear Ratesmentioning

confidence: 73%

Section: Of 18mentioning

confidence: 99%

The Effect of the Dilution Level on Microstructure and Wear Resistance of Fe-Cr-CV Hardfacing Coatings Deposited by PTA-P

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…In wear conditions, the ideal is that the microstructure presents moderate matrix hardness and resistance to the support of the second hard phase 11 . However, it is interesting that the microstructure has an excellent volumetric fraction and second phase size, so the mean free path between the carbides does not allow the abrasive to penetrate more into the matrix, removing more material 11,12 .…”

Section: Introductionmentioning

confidence: 99%

Dry Sliding Wear Resistance of Fe-Cr-C hardfacing Deposited by Flux-Core-Double-Wire GTAW

et al. 2023

View full text Add to dashboard Cite

Gas-Shielded Tungsten Arc Welding (GTAW) was modified to a Flux-Cored-Double-Wire GTAW (FCDW-GTAW); in this technique, wires of different compositions are used simultaneously to obtain different microstructures. In the modified GTAW, automatic flux-cored double-wire was used with a combination of four different wires deposited in AISI1020 steel, allowing different microstructures. Pin-on-disk wear tests described by ASTM G99 was used to evaluate the wear coefficients of four hardfacing materials combining Fe-Cr-C, Fe-Cr-C-Nb, Fe-Cr-C-Mo-Nb, and Fe-Cr-C-Mo-Ti alloys. The combination of these wires resulted in a hypoeutectic microstructure with niobium and titanium carbides, with an average hardness of 650 HV 0.3 , and hypereutectic microstructures formed by different niobium contents, with a microhardness range from 820 to 1020 HV 0.3 . The wear tests were performed without lubrication at room temperature, using a 6.0 mm diameter polished alumina sphere as a counter-body. The total distance covered was 1000 m with a speed of 0.1 m/s, a track radius of 6.0 cm, and an applied load of 10 N. Hardness, microstructure, wear coefficient, and wear mechanisms were compared. The results showed that wear resistance could be differentiated by the predominant wear mechanism: polishing for the hypoeutectic hardfacing and cracking for the hypereutectic ones.

show abstract

Wear Regimes of Fe–Cr–C Hardfacing Alloys in Microscale Abrasion Tests

Colaço

Pintaúde

2022

Tribol Lett

View full text Add to dashboard Cite

Estratégias para o Desenvolvimento de Revestimentos Resistentes ao Desgaste: Uma Revisão

Cited by 3 publications

References 32 publications

The Effect of the Dilution Level on Microstructure and Wear Resistance of Fe-Cr-CV Hardfacing Coatings Deposited by PTA-P

The Effect of the Dilution Level on Microstructure and Wear Resistance of Fe-Cr-CV Hardfacing Coatings Deposited by PTA-P

Dry Sliding Wear Resistance of Fe-Cr-C hardfacing Deposited by Flux-Core-Double-Wire GTAW

Wear Regimes of Fe–Cr–C Hardfacing Alloys in Microscale Abrasion Tests

Contact Info

Product

Resources

About