Surface modification of binder-jet additive manufactured Inconel 625 via electrospark deposition

Enrique, Pablo D.; Marzbanrad, Ehsan; Mahmoodkhani, Yahya; Jiao, Zhen; Toyserkani, Ehsan; Zhou, Norman Y.

doi:10.1016/j.surfcoat.2019.01.108

Cited by 39 publications

(16 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Because of its excellent mechanical strength and resistance to creep and corrosion in harsh environments, Inconel 625 has been widely used in aerospace, chemical, petrochemical, and marine applications. However, many of the Inconel 625 components are highly complex shapes that are very expensive to produce due to extensive machining [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Parametric Optimization of Laser Additive Manufacturing of Inconel 625 Using Taguchi Method and Grey Relational Analysis

et al. 2020

View full text Add to dashboard Cite

In order to improve the forming quality of the Inconel 625 cladding layer and make it to be more widely used. This paper addresses an experimental investigation on the influence of major process parameters like laser power, scanning speed, powder feed rate, and overlapping rate along with their interactions on surface roughness and width error of laser additive manufacturing process for forming Inconel 625 samples. Taguchi method and grey relational analysis were used to optimize the selected parameters, and the verification tests were carried out. The change of microhardness and microstructure in the overlapping zone and nonoverlapping zone of the cladding layer were studied by microhardness tester and scanning electron microscopy (SEM). The results show that the most significant effect in processing parameters on surface roughness and width error are both overlapping rate, and the optimal levels of laser power, scanning speed, powder feeder rate, and overlapping rate are 1800 W, 8 mm/s, 10 g/min, and 30%, respectively. Analysis of microstructure and composition showed that the content of Cr was high both in the Laves phase and matrix, the content of Nb in the Laves phase increased significantly and reached up to 24.48 wt%, and the Laves in the nonoverlapping zone was more compact than the overlapping zone.

show abstract

Section: Introductionmentioning

confidence: 99%

Parametric Optimization of Laser Additive Manufacturing of Inconel 625 Using Taguchi Method and Grey Relational Analysis

et al. 2020

View full text Add to dashboard Cite

show abstract

“…As discussed previously, AM metals suffer from high surface roughness, high tensile residual stresses, and high porosity (Ref 65 ). These issues have been reported to negatively affect the mechanical properties, especially the fatigue performance, of AM metals (Ref 38 , 57 , 66 ).…”

Section: Post-processing Methods For Am Metalsmentioning

confidence: 76%

Effects of Post-processing on the Surface Finish, Porosity, Residual Stresses, and Fatigue Performance of Additive Manufactured Metals: A Review

Zhang

Zhao

et al. 2021

J. of Materi Eng and Perform

108

View full text Add to dashboard Cite

Additive manufacturing (AM) has attracted much attention due to its capability in building parts with complex geometries. Unfortunately, AM metals suffer from three major drawbacks, including high porosity, poor surface finish, and tensile residual stresses, all of which will significantly compromise the fatigue performance. These drawbacks present a major obstacle to the application of AM metals in industries that produce fatigue-sensitive components. Many post-processing methods, including heat treatment, hot isotropic pressing, laser shock peening, ultrasonic nanocrystal surface modification, advanced finishing and machining, and laser polishing, have been used to treat AM metals to decrease their porosity, improve the surface finish, and eliminate tensile residual stresses. As a result, significant improvement in fatigue performance has been observed. In this paper, the state of the art in utilizing post-processing techniques to treat AM metals and the effects of these treatments on the porosity, surface finish, and residual stresses of metal components and their resultant fatigue performance are reviewed.

show abstract

“…Some suitable methods were reported for coating of metallic additive manufacturing [25]. For example, electrospark or electrophoretic depositions were used respectively for coating of Inconel 625 by aluminum alloy [26] and Ti implants by Chitosan-based layer with silver nanoparticules [27]. Soaking of Ti-6Al-4V structures fabricated by additive manufacturing in simulated body fluid also produces hydroxyapatite coating [28].…”

Section: Introductionmentioning

confidence: 99%

Coupling powder bed additive manufacturing and vapor phase deposition methods for elaboration of coated 3D Ti-6Al-4V architectures with enhanced surface properties

Moll

Blandin

Dendievel

et al. 2021

Surface and Coatings Technology

View full text Add to dashboard Cite

We propose an innovative process coupling powder bed additive manufacturing by Electron Beam Melting (EBM) with Chemical Vapor Deposition (CVD) and Atomic Layer Deposition (ALD) to develop 3D Ti-6Al-4V structures covered with AlN coating. Despite of the high reactivity of Ti-6Al-4V with nitrogen, thick ( 10 µm) and conformal AlN films are deposited by CVD on Ti-6Al-4V substrates with high surface roughness. An AlN under-layer deposited by ALD is necessary to mitigate the reaction between Ti-6Al-4V and the nitrogen precursor NH 3(g) and to limit the formation of brittle titanium nitride phases. We have thus achieved an adherent coating without any modification of the Ti-6Al-4V microstructure at the core of the substrate. We show that a 7 µm thick AlN coating is efficient in protecting Ti-6Al-4V against cyclic oxidation at 650°C for at least 650 h. This study opens new opportunities for the design of coated 3D Ti-6Al-4V structures for use in high temperature oxidizing environments.

show abstract

Surface modification of binder-jet additive manufactured Inconel 625 via electrospark deposition

Cited by 39 publications

References 27 publications

Parametric Optimization of Laser Additive Manufacturing of Inconel 625 Using Taguchi Method and Grey Relational Analysis

Parametric Optimization of Laser Additive Manufacturing of Inconel 625 Using Taguchi Method and Grey Relational Analysis

Effects of Post-processing on the Surface Finish, Porosity, Residual Stresses, and Fatigue Performance of Additive Manufactured Metals: A Review

Coupling powder bed additive manufacturing and vapor phase deposition methods for elaboration of coated 3D Ti-6Al-4V architectures with enhanced surface properties

Contact Info

Product

Resources

About