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Mechanical characterization and modelling of Inconel 718 material behavior for machining process assessment

Article dans une revue avec comité de lecture
Article dans une revue avec comité de lecture
Auteur
ITURBE, Ariane
366133 Mondragon Unibertsitatea
GIRAUD, Eliane
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
HORMAETXE, Exabier
366133 Mondragon Unibertsitatea
GARAY, Ainhara
366133 Mondragon Unibertsitatea
GERMAIN, Guénaël
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
OSTOLAZA, Koldo
ARRAZOLA, Pedro José
366133 Mondragon Unibertsitatea

URI
http://hdl.handle.net/10985/16585
DOI
10.1016/j.msea.2016.11.054
Date
2017
Journal
Materials Science and Engineering: A

Résumé

Nickel based alloys are extensively used in the aerospace industry due to the excellent corrosion resistance and high mechanical properties that are maintained up to elevated temperatures (600–800 °C). However, these superalloys are classified as difficult-to-cut and therefore modelling and simulation of the machining processes has become a key in the machinability assessment of nickel based alloys. The reliability of Finite Element Models (FEM) largely depends on the quality of input parameters, one of the most relevant being the constitutive material model representing work material behavior under high strain, strain rate and temperatures. In order to develop a reliable material model, the present work deals with a complete characterization of Inconel 718. Uniaxial compression tests at testing temperatures close to those found in machining (21–1050 °C) and high strain rates (10°−10 2 s −1 ) were performed on the Gleeble 3500 testing machine. Moreover, the microstructural analysis and microhardness measurements of the testing samples were performed, in order to correlate the microstructural state with the mechanical properties of the Inconel 718. Based on this experimental work, a new coupled empirical model is proposed to describe the particular behaviour of nickel based alloys at elevated temperatures and high strain rates. This material behaviour model introduces softening phenomena as well as the coupling between the temperature and the strain rate known to occur experimentally, for machining FEM simulations with Inconel 718 superalloy.

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  • Laboratoire Angevin de Mécanique, Procédés et InnovAtion (LAMPA)

Documents liés

Visualiser des documents liés par titre, auteur, créateur et sujet.

  • Corrigendum to “Mechanical characterization and modelling of Inconel 718 material behavior for machining process assessment” [Mater. Sci. Eng. A 682 (2017) 441–453] 
    Article dans une revue avec comité de lecture
    ITURBE, Ariane; GIRAUD, Eliane; HORMAETXE, Exabier; GARAY, Ainhara; GERMAIN, Guénaël; OSTOLAZA, Koldo; ARRAZOLA, Pedro José (Elsevier, 2019)
    Corrigendum to “Mechanical characterization and modelling of Inconel 718 material behavior for machining process assessment” [Mater. Sci. Eng. A 682 (2017) 441–453]
  • Surface Integrity When Machining Inconel 718 Using Conventional Lubrication and Carbon Dioxide Coolant 
    Communication avec acte
    CHAABANI, Sana; ARRAZOLA, Pedro José; AYED, Yessine; MADARIAGA, Aitor; TIDU, Albert; GERMAIN, Guénaël (Elsevier BV, 2020)
    Surface integrity induced by machining process affects strongly the performance of functional products, for instance, the fatigue life as well as the resistance to stress corrosion cracking. Consequently, it is relevant ...
  • Inverse Identification of the Ductile Failure Law for Ti6Al4V Based on Orthogonal Cutting Experimental Outcomes 
    Article dans une revue avec comité de lecture
    SELA, Andres; SOLER, Daniel; ORTIZ-DE-ZARATE, Gorka; GERMAIN, Guénaël; DUCOBU, François; ARRAZOLA, Pedro José (MDPI AG, 2021)
    Despite the prevalence of machining, tools and cutting conditions are often chosen based on empirical databases, which are hard to be made, and they are only valid in the range of conditions tested to develop it. Predictive ...
  • Comparison between cryogenic coolants effect on tool wear and surface integrity in finishing turning of Inconel 718 
    Article dans une revue avec comité de lecture
    CHAABANI, Sana; ARRAZOLA, Pedro José; AYED, Yessine; MADARIAGA, Aitor; TIDU, Albert; GERMAIN, Guénaël (Elsevier, 2020)
    The most important challenges when machining difficult-to-cut alloys used in critical applications consist mainly in increasing tool life as well as improving the component surface integrity. In particular, the nickel based ...
  • Tool wear and cutting forces when machining inconel 718 under cryogenic conditions: Liquid nitrogen and carbon dioxide 
    Communication avec acte
    CHAABANI, Sana; RODRIGUEZ, Iñigo; CUESTA, Mikel; AYED, Yessine; ARRAZOLA, Pedro José; GERMAIN, Guénaël (AIP Publishing, 2019)
    Nickel-based superalloys are widely exploited in turbojets components which are subjected to intense thermal and mechanical loadings during their operation. In fact, they exhibit excellent mechanical properties over a wide ...

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