Laser metal deposition additive manufacturing of TiC/Inconel 625 nanocomposites: Relation of densification, microstructures and performance

Cao, Sainan; Gu, Dongdong

doi:10.1557/jmr.2015.358

Cited by 32 publications

(13 citation statements)

References 38 publications

(38 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pereira et al (2017), in the remelting evaluation applied in the misorietated volume reduction for turbine blades, they highlight similar behavior, as well as in the work, of similar objective, presented by Rottwinkel et al (2017). Cao and Gu (2015), when evaluating density ratio, microstructures, and performance of TiC / Inconel 625 nanocomposites deposited via LMD, they observed that when increasing the energy, operating temperature is high enough to increase melt pool temperature and reduce the liquid viscosity, improving wettability. In this way, remelting process was able to encompass the layer's entire thickness.…”

Section: Microhardness Test and Pin-on-disk Tribological Test In Dry Mediummentioning

confidence: 74%

Effect of Laser Remelting on Tribological Performance of Ni-Cr-B-Si Coatings Deposited by Laser Metal Deposition

et al. 2020

View full text Add to dashboard Cite

Ni-superalloys coatings deposited via laser metal deposition (LMD) have been known to perform well in increasing components lifespan and consequently reducing production and repair costs. Although most of these coatings already present good results in its hardness, and tribological behavior, some can be improved by post-deposition treatments, such as laser remelting. In this ambit, the present paper aims to evaluate the laser remelting posttreatment effects on the Ni-Cr-B-Si coating sliding tribological behavior. For this, two conditions were compared: Ni-Cr-B-Si coating as-deposited and Ni-Cr-B-Si coating as-deposited and remelted. The coating's occurrence of superficial macro defects, their microhardness, and tribological performance in the pin-on-disk (ASTM G99) test were compared. Friction coefficient (load cell), volumetric loss (optical interferometry), Archard's wear coefficient and worn surfaces (SEM and EDS), were evaluated. Results show that the laser remelting posttreatment was effective in reducing cooling cracks, increasing hardness and reducing friction coefficient oscillation and volumetric loss average.

show abstract

Section: Microhardness Test and Pin-on-disk Tribological Test In Dry Mediummentioning

confidence: 74%

Effect of Laser Remelting on Tribological Performance of Ni-Cr-B-Si Coatings Deposited by Laser Metal Deposition

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Therefore, a larger degree of undercooling of the melt resulting from an increased cooling rate and a lower actual crystallization temperature facilitates the formation of the welldeveloped secondary dendritic arms of columnar dendrites. In addition, the refinement of columnar dendrite which is defined by the dendrite spacing can be explained by [28,29] d ¼ bðv c Þ À1=3…”

Section: Resultsmentioning

confidence: 99%

Laser Metal Deposition Additive Manufacturing of TiC Reinforced Inconel 625 Composites: Influence of the Additive TiC Particle and Its Starting Size

Cao

Lin

2016

Journal of Manufacturing Science and Engineering

Self Cite

View full text Add to dashboard Cite

In this study, laser metal deposition (LMD) additive manufacturing was used to deposit the pure Inconel 625 alloy and the TiC/Inconel 625 composites with different starting sizes of TiC particles, respectively. The influence of the additive TiC particle and its original size on the constitutional phases, microstructural features, and mechanical properties of the LMD-processed parts was studied. The incorporation of TiC particles significantly changed the prominent texture of Ni–Cr matrix phase from (200) to (100). The bottom and side parts of each deposited track showed mostly the columnar dendrites, while the cellular dendrites were prevailing in the microstructure of the central zone of the deposited track. As the nano-TiC particles were added, more columnar dendrites were observed in the solidified molten pool. The incorporation of nano-TiC particles induced the formation of the significantly refined columnar dendrites with the secondary dendrite arms developed considerably well. With the micro-TiC particles added, the columnar dendrites were relatively coarsened and highly degenerated, with the secondary dendrite growth being entirely suppressed. The cellular dendrites were obviously refined by the additive TiC particles. When the nano-TiC particles were added to reinforce the Inconel 625, the significantly improved microhardness, tensile property, and wear property were obtained without sacrificing the ductility of the composites.

show abstract

“…Bakkar et al [ 27 ] investigated the high volume percent TiC reinforced (25–70%) Inconel 625 composites. Cao and Gu [ 28 ] investigated the microstructure and properties of Inconel 625 matrix composite coatings with 2.5 wt.% TiC nano-particles. The previously conducted researches in this field [ 24 , 25 , 26 , 27 , 28 ] show that nickel-based superalloys composite coatings reinforced by 2.5–50% TiC particles are characterized by 10–45% higher hardness and up to 6% higher wear resistance than metallic nickel-based superalloys coatings.…”

Section: Introductionmentioning

confidence: 99%

“…Cao and Gu [ 28 ] investigated the microstructure and properties of Inconel 625 matrix composite coatings with 2.5 wt.% TiC nano-particles. The previously conducted researches in this field [ 24 , 25 , 26 , 27 , 28 ] show that nickel-based superalloys composite coatings reinforced by 2.5–50% TiC particles are characterized by 10–45% higher hardness and up to 6% higher wear resistance than metallic nickel-based superalloys coatings. The results [ 27 ] also show that the increased TiC particles content of 50–70% may cause defects in the microstructure due to lack of matrix penetration.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Structure, Mechanical Properties and Erosive Resistance of the Laser Cladded Inconel 625-Based Coatings Reinforced by TiC Particles

2021

View full text Add to dashboard Cite

The article presents research in the field of laser cladding of metal-matrix composite (MMC) coatings. Nickel-based superalloys show attractive properties including high tensile strength, fatigue resistance, high-temperature corrosion resistance and toughness, which makes them widely used in the industry. Due to the insufficient wear resistance of nickel-based superalloys, many scientists are investigating the possibility of producing nickel-based superalloys matrix composites. For this study, the powder mixtures of Inconel 625 superalloy with 10, 20 and 40 vol.% of TiC particles were used to produce MMC coatings by laser cladding. The titanium carbides were chosen as reinforcing material due to high thermal stability and hardness. The multi-run coatings were tested using penetrant testing, macroscopic and microscopic observations, microhardness measurements and solid particle erosive test according to ASTM G76-04 standard. The TiC particles partially dissolved in the structure during the laser cladding process, which resulted in titanium and carbon enrichment of the matrix and the occurrence of precipitates formation in the structure. The process parameters and coatings chemical composition variation had an influence on coatings average hardness and erosion rates.

show abstract

Laser metal deposition additive manufacturing of TiC/Inconel 625 nanocomposites: Relation of densification, microstructures and performance

Abstract: Abstract

Cited by 32 publications

References 38 publications

Effect of Laser Remelting on Tribological Performance of Ni-Cr-B-Si Coatings Deposited by Laser Metal Deposition

Effect of Laser Remelting on Tribological Performance of Ni-Cr-B-Si Coatings Deposited by Laser Metal Deposition

Laser Metal Deposition Additive Manufacturing of TiC Reinforced Inconel 625 Composites: Influence of the Additive TiC Particle and Its Starting Size

Characterization of the Structure, Mechanical Properties and Erosive Resistance of the Laser Cladded Inconel 625-Based Coatings Reinforced by TiC Particles

Contact Info

Product

Resources

About