We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
AN INVESTIGATION ON MICROSTRUCTURES, MECHANICAL AND WEAR BEHAVIOR OF LASER-CLADDED INCONEL 625 AND NIMONIC 90 OVER NIMONIC 90 SUBSTRATE.
- Authors
PRABAKARAN, T.; KUMAR, D. RAJ; VIJAYAN, K.; GANESH, K. MADHAN MUTHU; THAMIZHVALAVAN, P.
- Abstract
The wrought nickel–chromium–cobalt Nimonic 90 alloy is widely used in turbine blades, piston rings and forged tools due to their high stress-rupture strength and creep resistance up to 920∘C. The application components showed unavoidable wear behaviors at high loads due to the reduced resistance of the components. Hence, in order to increase the wear resistance of this alloy, Inconel 625 and Nimonic 90 particle depositions have been carried out on Nimonic 90 substrate through the laser-cladding techniques to study the microstructure, mechanical and tribological behaviors of alloys. The phases, microstructure and microhardness of the claddings were investigated by X-ray diffractometry (XRD), Transmission electron microscopy (TEM), Scanning electron microscope (SEM), Energy-dispersive X-ray spectroscopy (EDS) and hardness test, respectively. Results showed that the mean thickness of the interfacial layer of Inconel 625 and Nimonic 90 was 18.51 ± 4 μ m and 90.68 ± 7 μ m, respectively. The microstructure of the cladding surfaces resulted in dendritic and interdendritic structures. An overall analysis found that the gamma-Ni and hard laves phases were presented in Inconel 625 and Nimonic 90 clad surfaces, respectively. Nimonic 90 clad surface had a high hardness and wear resistance compared with Inconel 625 clad surface and substrate due to the present hard laves phase. Besides, the roughness of the Nimonic 90 clad surface was lower compared with the Inconel 625 clad surface and substrate.
- Subjects
MECHANICAL wear; INCONEL; LAVES phases (Metallurgy); MICROSTRUCTURE; SCANNING electron microscopes
- Publication
Surface Review & Letters, 2024, Vol 31, Issue 5, p1
- ISSN
0218-625X
- Publication type
Article
- DOI
10.1142/S0218625X24500380