Injection molding of nickel based 625 superalloy: Sintering, heat treatment, microstructure and mechanical properties

Özgün, Özgür; Gülsoy, H. Özkan; Yilmaz, Ramazan; Fındık, Fehim

doi:10.1016/j.jallcom.2012.08.069

Cited by 106 publications

(44 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The volume fraction of superalloy powder in feedstock was 60% vol. [9]. The obtained feedstock was granulated and then injection moulding was performed at 12.5 MPa and for 20 seconds.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

See 1 more Smart Citation

The effect of aging treatment on the fracture toughness and impact strength of injection molded Ni-625 superalloy parts

Özgün

Yilmaz

Gülsoy

et al. 2015

Materials Characterization

Self Cite

View full text Add to dashboard Cite

“…The volume fraction of superalloy powder in feedstock was 60% vol. [9]. The obtained feedstock was granulated and then injection moulding was performed at 12.5 MPa and for 20 seconds.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…Recently, PIM of superalloys has attracted great attention for a variety of gas turbine engine parts [3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

The effect of aging treatment on the fracture toughness and impact strength of injection molded Ni-625 superalloy parts

Özgün

Yilmaz

Gülsoy

et al. 2015

Materials Characterization

Self Cite

View full text Add to dashboard Cite

“…The metal-powder particles obtained by atomization with water have a spherical shape and a diameter d 90 of less than or equal to 32 µm. Inconel is being investigated more and more as a structural alloy for producing aeronautic components by metal-injection molding because of its higher resistance to oxidation, excellent performance at high temperatures (high strength up to 1400 • C), and its impact strength [30,31]. The components' multi-component binder is usually composed of three different ingredients (surfactant, rheofluidifiant, the rigidifying, etc.)…”

Section: Methodsmentioning

confidence: 99%

Modelling and numerical simulation of Supercritical CO2 debinding of Inconel 718 components elaborated by Metal Injection Molding

Agne

Barrière

2017

Applied Sciences

View full text Add to dashboard Cite

Featured Application: The numerical simulation of the debinding step by using a supercritical fluid is used to predict the binder extraction to optimize the component's shape.Abstract: A debinding step using the supercritical state of a fluid has been increasingly investigated for extracting organic binders from components obtained by metal-injection molding. It consists of placing the component in an enclosure subjected to pressure and temperatures higher than the critical point to perform polymer extraction of the Metal-injection molding (MIM) component. It is an alternative to conventional solvent debinding. The topic of this study is to model and simulate the supercritical debinding stage to elucidate the mechanism of polymer degradation and stabilization with a three-dimensional model. Modelling this extraction process would optimize the process on an industrial scale. It can be physically described by Fick's law of diffusion. The model's main parameter is the diffusion coefficient, which is identified by using linear regression based on the least-squares method. In the model, an effective length scale is specially developed to take into account the diffusion in all directions. The tests were performed for extracting polyethylene glycol, an organic additive, using supercritical CO 2 in injected components. The feedstock is composed of polypropylene, polyethylene glycol, and stearic-acid as binder mixed with Inconel 718 super-alloy powders. The identified parameters were used to calculate the diffusion coefficient and simulate the supercritical debinding step on the Comsol Multiphysics ® finite-element software platform to predict the remaining binder. The obtained numerical simulation results are in good agreement with the experimental data. The proposed numerical simulations allow for the determination of the remaining polyethylene glycol (PEG) binder distribution with respect to processing parameters for components during the supercritical debinding process at any time. Moreover, this approach can be used in other formulation, powder, and binder systems.

show abstract

“…Researches on PIM process have had important developments in the last 20 years [1,2,3]. The feedstock plays a primary and decisive role on dimensions and mechanical properties of the PIM products.…”

Section: Introductionmentioning

confidence: 99%

“…Hidalgo Garcia proposed the suitable model, with the proofs of its application [4]. The model is shown in equation (1).…”

Section: Introductionmentioning

confidence: 99%

Development and identification of rheological model adapted for Powder Injection Moulding

et al. 2016

View full text Add to dashboard Cite

Abstract. An Inconel based feedstock for manufacturing super alloy components by powder injection moulding is introduced. The relationship between the rheological properties and different parameters of the feedstock is investigated, based on a prescribed model. The method to determine the parameters of the rheological model for powder injection moulding is presented, including the important thermal effect.

show abstract

Injection molding of nickel based 625 superalloy: Sintering, heat treatment, microstructure and mechanical properties

Cited by 106 publications

References 26 publications

The effect of aging treatment on the fracture toughness and impact strength of injection molded Ni-625 superalloy parts

The effect of aging treatment on the fracture toughness and impact strength of injection molded Ni-625 superalloy parts

Modelling and numerical simulation of Supercritical CO2 debinding of Inconel 718 components elaborated by Metal Injection Molding

Development and identification of rheological model adapted for Powder Injection Moulding

Contact Info

Product

Resources

About