Application of MIM Process for Nickel Base Superalloy

Ikeda, Hikaru; Iwahashi, Takanori; Osada, Toshiko; Miura, Hideshi

doi:10.2497/jjspm.58.33

Cited by 4 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…is an alternative process which offers net shape production 4) , high design-flexibility, and high cost-efficiency. Inconel 718 is one of the nickel based superalloy which is widely used in gas turbines, aerospace vehicles and tooling materials.…”

Section: To Overcome This Problem Metal Injection Molding (Mim)mentioning

confidence: 99%

Improvement of Mechanical Properties of Injection Molded Ni-base Superalloy Compacts

Kudo

Wai

Osada

et al. 2016

J. Jpn. Soc. Powder Powder Metallurgy

Self Cite

View full text Add to dashboard Cite

Superalloy has been used for aerospace application because of their excellent attributes of high strength and corrosion resistance at high temperature. Inconel 718 is one of the representative Ni-based superalloy. Generally, superalloy has poor workability, especially high tool wear by machining, so that it is not easy to produce the components of complex shaped parts at low cost. To overcome such as the problem, metal injection molding (MIM) process would be a useful technique which offers net shape production, high design flexibility, and high cost efficiency for mass production. In this study, gas-atomized fine alloy powder of Inconel 718 was prepared for MIM process, and the mechanical properties of injection molded compacts were investigated. The relative density over 99.7 %, which is much higher than density of usual MIM compacts, was obtained by supersolidious liquid-phase sintering. Furthermore, injection molded Inconel 718 showed high fatigue strength comparable to the wrought materials, because the pore size of the MIM compacts was smaller than the inclusion size of wrought materials. And it was found that the grain size was more dominant than pore size against the fatigue failure of MIM Inconel 718 with near full density.

show abstract

Section: To Overcome This Problem Metal Injection Molding (Mim)mentioning

confidence: 99%

Improvement of Mechanical Properties of Injection Molded Ni-base Superalloy Compacts

Kudo

Wai

Osada

et al. 2016

J. Jpn. Soc. Powder Powder Metallurgy

Self Cite

View full text Add to dashboard Cite

show abstract

“…In recent years, MIMed superalloys have gained growing interests in the manufacturing of complex shaped components used for higher temperature and higher performance applications, such as turbine wheels in automobile turbocharger and turbine blades in aero engine. [13][14] In this work, MIM418 superalloy was prepared using gas atomised superalloy powder. The densification behaviour, microstructure evolution during sintering and heat treatment, characteristics of c9 precipitates and carbides, as well as the resulting tensile properties of the alloy were discussed in detail.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructure characterisation and tensile properties of MIM418 superalloy

Zhang

Chen

et al. 2015

Powder Metallurgy

View full text Add to dashboard Cite

Metal injection moulding in conjunction with hot isostatic pressing was applied to prepare MIM418 superalloy. Densification behaviour, precipitated phases and tensile properties of the alloy were characterised. Relative density of 97.6% is obtained after vacuum sintering at 12408C, and near full dense alloy is achieved after HIPing. High volume fraction (57%) of near cuboidal c' phase with average particle size of 0.52 mm precipitates homogeneously in c matrix. Small amount of fine carbides with average particle size of 0.22 mm distribute mainly along grain boundaries and in grain interior. Average grain size of the superalloy is estimated to be ,26 mm. Uniformly distributed precipitates and fine grain size lead to significant improvement of mechanical properties. The tensile strength, yield strength and ductility of MIM418 superalloy achieve 1425 MPa, 1004 MPa and 19.4% respectively, which are much higher than that of the cast K418 superalloy.

show abstract

Net-Shape Forming and Mechanical Properties of MIM418 Turbine Wheel

Lin

Chen

et al. 2016

J. of Materi Eng and Perform

View full text Add to dashboard Cite

Application of MIM Process for Nickel Base Superalloy

Cited by 4 publications

References 3 publications

Improvement of Mechanical Properties of Injection Molded Ni-base Superalloy Compacts

Improvement of Mechanical Properties of Injection Molded Ni-base Superalloy Compacts

Microstructure characterisation and tensile properties of MIM418 superalloy

Net-Shape Forming and Mechanical Properties of MIM418 Turbine Wheel

Contact Info

Product

Resources

About