Effect of NbC Addition on the Microstructure and Wear Resistance of Laser Cladding Nickel-Based Alloy Coatings

Laser cladding nickel-based alloy coating has dense microstructure and good bonding with base material, but its wear resistance is difficult to meet the requirements of harsh environment. In order to enhance the microhardness and wear resistance of nickel-based coatings, NbC (0.6 <  d  < 5 μm)...

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Bibliographic Details
Published in:Journal of materials engineering and performance Vol. 33; no. 22; pp. 12437 - 12451
Main Authors: Liu, Yingpeng, Wang, Kaiming, Fu, Hanguang, Yang, Xiaojun, Lin, Jian
Format: Journal Article
Language:English
Published: New York Springer US 01.11.2024
Springer Nature B.V
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Corrosion and Coatings
Engineering Design
Friction resistance
Frictional wear
Grain size
Laser beam cladding
Lasers
Materials Science
Microhardness
Microstructure
Morphology
Nickel alloys
Nickel base alloys
Nickel coatings
Original Research Article
Oxidation
Particle size
Quality Control
Reliability
Safety and Risk
Scanning electron microscopy
Solid solutions
Steel
Tribology
Wear resistance
Wear tests
direct addition of NbC
laser cladding
microstructure
nickel-based coating
wear resistance
ISSN:1059-9495, 1544-1024
Online Access:Get full text
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Summary:Laser cladding nickel-based alloy coating has dense microstructure and good bonding with base material, but its wear resistance is difficult to meet the requirements of harsh environment. In order to enhance the microhardness and wear resistance of nickel-based coatings, NbC (0.6 <  d  < 5 μm) was added directly to Ni45 powder to prepare laser cladding nickel-based composite coatings. By studying the microstructure, microhardness and wear resistance, it was found that the main phases in the coating were γ -Ni solid solution and precipitated phases such as Cr 23 C 6 , Cr 7 C 3 and NbC. The addition of NbC inhibits the formation of Cr 23 C 6 and the total carbide content within the coating is reduced, which limited the further improvement of the microhardness of the coating. Due to the refining effect of Nb, the dendrite arm spacing was reduced up to 64.7% of the 1# coating, and the grain size was reduced to 60.0% of the 1# coating, and the coatings demonstrate better wear resistance during frictional wear.
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ISSN:1059-9495
1544-1024
DOI:10.1007/s11665-023-08828-y