Effect of Nb content on microstructure and corrosion resistance of Inconel 625 coating formed by laser cladding

Gao, Jie; Qingchao, Ma; Yan, Sun; Kangning, Wang; Qiang, Song; Wang, Canming

doi:10.1016/j.surfcoat.2023.129311

Cited by 19 publications

(4 citation statements)

References 41 publications

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“…They are difficult to fabricate using traditional casting and forging methods. Therefore, the use of DLMD to form thin-walled Inconel 625 components will have a significant impact on the development of the aviation and aerospace industry [12][13][14]. Inconel 625 is a multi-component superalloy, and the melting points of each element differ significantly.…”

Section: Tóm Tắtmentioning

confidence: 99%

Study on the mechanism of crack fomation in Inconel 625 formed by direct laser metal deposition

2023

jsthaui

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Section: Tóm Tắtmentioning

confidence: 99%

Study on the mechanism of crack fomation in Inconel 625 formed by direct laser metal deposition

2023

jsthaui

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“…They are difficult to fabricate using traditional casting and forging methods. Therefore, the use of direct laser metal deposition (DLMD) to form thin-walled Inconel 625 components will have a significant impact on the development of the aviation and aerospace industry [1][2][3]. However, the melting points of each element of Inconel 625 are significantly different.…”

Section: Introductionmentioning

confidence: 99%

Effects of scanning methods on cracking, microstructures and microhardness of Inconel 625 parts formed by direct laser metal deposition

Khoa,

Le,

Duong

et al. 2024

Manufacturing Rev.

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This study aims at investigating the effects of scanning methods on the stress distribution and microstructures of Inconel 625 thin-walled part fabricated by direct laser metal deposition. The results showed that with the single direction scanning (SDS) method, the residual stress at both the ends of the thin wall was relatively high while the stress at the middle was smaller with a stress difference of about 1800 MPa. In contrast, with the reverse direction scanning (RDS) method, the residual stress in the thin wall was distributed relatively evenly, with a stress difference of about 350 MPa between both the ends and the center. The experimental results showed that, in the SDS method, cracks occurred at both ends and in the middle of the thin wall, whereas in the RDS method, warping and cracks phenomena were eliminated. The microstructure of the Inconel 625 in the forming layer is characterized by a columnar crystal structure that has a small length and grows perpendicularly to the scanning direction. This growth is continuous between the forming layers. In both cases, the microhardness increases with the height of the formed layers. The microhardness values are relatively uniform with values ranging from 420 to 450 HV.

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“…They have the advantages of high bond strengths, small heat-affected zones, high microhardnesses, and good wear resistance. Nickel-based NbC composite coatings are widely used in the surface strengthening and repair of automotive molds, engine turbines, and combustion turbine blades due to their high microhardness and good wear resistance [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Wear Resistance of In Situ NbC-Reinforced Laser Cladding Ni45 Coatings

Yingpeng

Wang

et al. 2023

Lubricants

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In situ NbC-reinforced laser cladding Ni45 coatings have the advantages of high bond strengths, low dilution rates, small heat-affected zones and good wear resistance and have broad application prospects in the field of surface strengthening and repair of workpieces such as automotive molds and engine turbines. Previous studies have mostly used pure niobium powder for in situ synthesis to prepare Ni-based NbC coatings with a high production cost. In this paper, NbC was successfully synthesized in situ in Ni45 powder using inexpensive FeNb65 and Cr3C2. The prepared coating has a uniform microstructure and excellent wear resistance, and the reinforced phases are mainly NbC and Cr23C6. Coating 4# with 25 wt.% FeNb65 + Cr3C2 has the highest microhardness of 776.3HV0.2, about 1.45 times that of the Ni45 coating, and its wear resistance is 36.36 min/mg, about 60.6 times that of the Cr12MoV steel base material and about 23.76 times that of the Ni45 coating.

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Effect of Nb content on microstructure and corrosion resistance of Inconel 625 coating formed by laser cladding

Cited by 19 publications

References 41 publications

Study on the mechanism of crack fomation in Inconel 625 formed by direct laser metal deposition

Study on the mechanism of crack fomation in Inconel 625 formed by direct laser metal deposition

Effects of scanning methods on cracking, microstructures and microhardness of Inconel 625 parts formed by direct laser metal deposition

Wear Resistance of In Situ NbC-Reinforced Laser Cladding Ni45 Coatings

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