scholarly journals Utilizing carbon nanotubes in ceramic particle reinforced MMC coatings deposited by laser cladding with Inconel 625 wire

Author(s):  
Shaowei Zhou ◽  
Tianyu Xu ◽  
Chang Hu ◽  
Han Wu ◽  
Huailiang Liu ◽  
...  
Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2225
Author(s):  
Aleksandra Kotarska ◽  
Tomasz Poloczek ◽  
Damian Janicki

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.


2019 ◽  
Vol 355 ◽  
pp. 163-171 ◽  
Author(s):  
Yuan Chen ◽  
Qin Zhang ◽  
Zhijun Chen ◽  
Liang Wang ◽  
Jianhua Yao ◽  
...  

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 544 ◽  
Author(s):  
Maider Muro ◽  
Josu Leunda ◽  
Garikoitz Artola ◽  
Carlos Soriano

The aim of this work is to evaluate the microstructural evolutions developed by mixing a corrosion-resistant and high-performance material with a high-hardness material in a coating obtained by laser-cladding technology. In this paper, five different mixtures of Inconel 625 alloy and AISI H13 steel powders have been deposited on a plate of 42CrMo4 steel using a 2.2 kW diode pumped Nd:YAG laser. The effect of adding tool steel to a Ni-based superalloy has been analyzed by the characterization of each cladded sample using optical microscopy and scanning electron microscopy (SEM). The precipitates observed in the samples have been analyzed by energy dispersive X-ray spectroscopy (EDS X-ray). SEM micrographs and EDS analysis indicate the existence of Laves phase. It has been observed that the presence of these precipitates is stabilized in a certain range of AISI H13 addition.


2012 ◽  
Vol 472-475 ◽  
pp. 313-316 ◽  
Author(s):  
Chun Hua Zhang ◽  
Yu Xi Hao ◽  
Lin Qi ◽  
Fang Hu ◽  
Song Zhang ◽  
...  

Abstract. The paper presents the results of a study concerned with the surface hardening of Inconel 625 alloys and Ni-base alloy powder on Monel alloy by electro spark deposition and laser cladding processes. The microstructure, the phase composition and the microhardness of samples are investigated by SEM, EDS, XRD and microhardness instrument. It is shown that, the matrix phase is mainly made up of dendritic structure (γ-Ni), interdendritic eutectic phase (Ni3(B,Fe,Si)) and some precipitates (Cr7C3, Cr23C6). Additional, the microhardness of laser cladding layer can be substantially increased, duo to formation of precipitates.


2015 ◽  
Vol 217 ◽  
pp. 232-240 ◽  
Author(s):  
T.E. Abioye ◽  
D.G. McCartney ◽  
A.T. Clare

2017 ◽  
Vol 715 ◽  
pp. 362-373 ◽  
Author(s):  
Xiang Xu ◽  
Gaoyang Mi ◽  
Lin Chen ◽  
Lingda Xiong ◽  
Ping Jiang ◽  
...  
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