Mechanical properties of inconel 718 nickel-Based superalloy around solidus temperature

Tsubasa Ohashi, Ryosuke Goto, Kenji Muto, Makoto Yoshida

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    Nickel-based superalloys have been applied to gas turbine and aircraft jet engine parts due to superior high temperature strength and corrosion resistance. However, casting defect such as solidification cracking often occurs. In order to increase productivity of precision casting and various shape casting processes, predicting the occurrence of solidification cracking by using CAE (Computer Aided Engineering) should be essential. Therefore, it is necessary to obtain mechanical properties in the state of solid-liquid coexistence. In this study, we try to get high temperature (around solidus temperature) mechanical properties of the nickel-based superalloy such as Inconel 718 by using originally developed tensile test. In the previous reports, flat distribution of temperature in the gage length, and crack initiation strain were not ensured. On the other, the developed device ensured within 3°C of the temperature distribution in the gage length as to the Inconel 718. Tensile strain was measured by using in-situ observation of marker on the surface of the specimen. As a result, Stress-Strain curve, crack initiation stress, and crack initiation strain of Inconel 718 were obtained.

    Original languageEnglish
    Pages (from-to)148-154
    Number of pages7
    JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
    Volume76
    Issue number2
    DOIs
    Publication statusPublished - 2012 Feb

    Fingerprint

    Inconel (trademark)
    solidus
    crack initiation
    heat resistant alloys
    Nickel
    Superalloys
    Crack initiation
    nickel
    mechanical properties
    Mechanical properties
    solidification
    engine parts
    Gages
    Solidification
    jet engines
    aircraft engines
    Casting
    Precision casting
    gas turbines
    computer aided design

    Keywords

    • Mechanical property
    • Nickel-based superalloy
    • Solidification cracking
    • Stress-strain curve

    ASJC Scopus subject areas

    • Mechanics of Materials
    • Materials Chemistry
    • Metals and Alloys
    • Condensed Matter Physics

    Cite this

    Mechanical properties of inconel 718 nickel-Based superalloy around solidus temperature. / Ohashi, Tsubasa; Goto, Ryosuke; Muto, Kenji; Yoshida, Makoto.

    In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 76, No. 2, 02.2012, p. 148-154.

    Research output: Contribution to journalArticle

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