Effect of heat treatment on microstructure evolution and mechanical properties of Inconel 625 with 0.4 wt% boron modification fabricated by gas tungsten arc deposition

Tian, Yuan; Gontcharov, Alexandre; Gauvin, Raynald; Lowden, P.; Brochu, Mathieu

doi:10.1016/j.msea.2016.12.038

Cited by 16 publications

(4 citation statements)

References 27 publications

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“…However, the phases precipitated in γ-Ni matrix are not detected by XRD due to a relatively low volume fraction of these precipitates. The result is similar to the previous studies [23]. Only three peaks including 111γ, 200γ and 220γ are detected and this reveals the pattern of the columnar dendritic growth [24].…”

Section: Appl Sci 2018 8 X For Peer Review 5 Of 14supporting

confidence: 91%

Superior Mechanical Behavior and Fretting Wear Resistance of 3D-Printed Inconel 625 Superalloy

Gao¹,

Zhou

2018

Applied Sciences

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Additive manufacturing (AM) nickel-based superalloys have been demonstrated to equate or exceed mechanical properties of cast and wrought counterparts but their tribological potentials have not been fully realized. This study investigates fretting wear behaviors of Inconel 625 against the 42 CrMo4 stainless steel under flat-on-flat contacts. Inconel 625 is prepared by additive manufacturing (AM) using the electron beam selective melting. Results show that it has a high hardness (335 HV), superior tensile strength (952 MPa) and yield strength (793 MPa). Tribological tests indicate that the AM-Inconel 625 can suppress wear of the surface within a depth of only ~2.4 μm at a contact load of 106 N after 2 × 104 cycles. The excellent wear resistance is attributed to the improved strength and the formation of continuous tribo-layers containing a mixture of Fe2O3, Fe3O4, Cr2O3 and Mn2O3.

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Section: Appl Sci 2018 8 X For Peer Review 5 Of 14supporting

confidence: 91%

Superior Mechanical Behavior and Fretting Wear Resistance of 3D-Printed Inconel 625 Superalloy

Gao¹,

Zhou

2018

Applied Sciences

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“…In contrast, the elongation at fracture was found to decrease with increasing solid solution treatment temperature (Figure 9(c)). The reason might be that the increase of the δ phase led to a decrease in the high-temperature ductility of the alloy [25]. However, the detailed mechanism behind the effect of the solid solution treatment temperature on the precipitation of the δ phase remains to be further analysed.…”

Section: Resultsmentioning

confidence: 99%

High-temperature mechanical properties of Inconel-625: Role of carbides and delta phase

Liu

Xiao

Qin

et al. 2017

Materials Science and Technology

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Based on the temperature sensitivity characteristics, high-temperature tensile tests were performed at different temperatures and after different solid solution treatments to investigate the effect of Cr-rich M23C6, Nb-rich MC and the delta phase on the mechanical properties of Inconel 625. The experimental results indicated that the Cr-rich M23C6 carbides and the Nb-rich MC carbides decomposed at 700°C, which could be the reason for resulting tensile strength anomaly that was observed in a narrow temperature range from 650 to 700°C during the tensile tests at different temperatures. For the samples subjected to a prior solid solution treatment, the size of the δ phase was found to increase with the solution treatment temperature, whereas the elongation at fracture decreased.

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“…Maraging steels are highly valued for their outstanding mechanical properties, which include excellent ductility, high yield strength, remarkable mechanical resistance, and super weldability [20][21][22][23]. Unlike high-carbon Ni-based alloys, Fe-based alloys, and Al-based alloys, maraging steels are low-carbon martensitic non-stainless steels less prone to cracking during rapid cooling and solidification [24][25][26][27][28]. These exceptional characteristics make maraging steels ideal for tooling materials utilised in extreme conditions like injection moulding, die casting, hot-pressing, and severe plastic deformation processing.…”

Section: Introductionmentioning

confidence: 99%

Microhardness and Microstructure Analysis of the LPBF Additively Manufactured 18Ni300

Cerezo,

Aguilera,

Garcia-Gonzalez

et al. 2024

Materials

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This research focuses on analysing the 18Ni300 maraging steel produced through laser powder bed fusion. Specifically, it aims to examine the phase components using X-ray diffraction, the microstructure through scanning electron microscopy, and the hardness of the different structures present in the manufactured material. The primary goal is to meticulously analyse the material and its microstructures. By doing so, a correlation between the hardness and each structure type, be it cellular or columnar, can be established. This will allow us to pinpoint any defects in the material before any surface chemical treatment is carried out and facilitate a thorough examination of its microstructure. A consistent pattern emerges across the samples through systematic measurement of microhardness distribution in various locations and detailed examination of the structure. The findings of the study reveal that the hardness of cellular and columnar structures exhibits a significant variation based on the location of the measurement about cell boundaries. The hardness value is notably higher in the combination of cellular and multiple layers, as the data indicate.

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Effect of heat treatment on microstructure evolution and mechanical properties of Inconel 625 with 0.4 wt% boron modification fabricated by gas tungsten arc deposition

Cited by 16 publications

References 27 publications

Superior Mechanical Behavior and Fretting Wear Resistance of 3D-Printed Inconel 625 Superalloy

Superior Mechanical Behavior and Fretting Wear Resistance of 3D-Printed Inconel 625 Superalloy

High-temperature mechanical properties of Inconel-625: Role of carbides and delta phase

Microhardness and Microstructure Analysis of the LPBF Additively Manufactured 18Ni300

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