Detection of solidification cracking of Al-7mass%Si alloy by using acoustic emission and visualization methods

Itaru Endo, Hiroyuki Chiba, Toru Ueki, Takanari Toriyama, Makoto Yoshida

    Research output: Contribution to journalArticle

    Abstract

    Detection of AE signals of solidification cracking of Al-7mass%Si alloy was attempted with in situ microscopic observation on the surface of casting using high speed camera. During solidification, it was found that AE signal from the casting with crack was higher than AE signal from the casting without crack. As a result of observation of casting using high speed camera, it was found that a rise of AE signal corresponded to initiation of solidification cracking. This stage was the stage of eutectic solidification. Thus, AE signals of solidification cracking should be generated during eutectic solidification. However, AE signals from the casting without cracking were also detected during solidification. This means that AE signals other than solidification cracking should be generated during solidification. Therefore, AE signals detected during eutectic solidification is not necessarily AE signals of solidification cracking. In order to detect AE signals of solidification cracking, it is necessary to separate AE signals of solidification cracking and other than solidification cracking.

    Original languageEnglish
    Pages (from-to)486-491
    Number of pages6
    JournalKeikinzoku/Journal of Japan Institute of Light Metals
    Volume60
    Issue number10
    DOIs
    Publication statusPublished - 2010

    Fingerprint

    Acoustic emissions
    Solidification
    Visualization
    Casting
    Eutectics
    High speed cameras
    Cracks

    Keywords

    • Acoustic emission
    • Aluminum
    • Direct chill casting
    • Hot tearing
    • Solidification cracking

    ASJC Scopus subject areas

    • Materials Chemistry
    • Metals and Alloys
    • Mechanical Engineering
    • Mechanics of Materials

    Cite this

    Detection of solidification cracking of Al-7mass%Si alloy by using acoustic emission and visualization methods. / Endo, Itaru; Chiba, Hiroyuki; Ueki, Toru; Toriyama, Takanari; Yoshida, Makoto.

    In: Keikinzoku/Journal of Japan Institute of Light Metals, Vol. 60, No. 10, 2010, p. 486-491.

    Research output: Contribution to journalArticle

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    AU - Chiba, Hiroyuki

    AU - Ueki, Toru

    AU - Toriyama, Takanari

    AU - Yoshida, Makoto

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    AB - Detection of AE signals of solidification cracking of Al-7mass%Si alloy was attempted with in situ microscopic observation on the surface of casting using high speed camera. During solidification, it was found that AE signal from the casting with crack was higher than AE signal from the casting without crack. As a result of observation of casting using high speed camera, it was found that a rise of AE signal corresponded to initiation of solidification cracking. This stage was the stage of eutectic solidification. Thus, AE signals of solidification cracking should be generated during eutectic solidification. However, AE signals from the casting without cracking were also detected during solidification. This means that AE signals other than solidification cracking should be generated during solidification. Therefore, AE signals detected during eutectic solidification is not necessarily AE signals of solidification cracking. In order to detect AE signals of solidification cracking, it is necessary to separate AE signals of solidification cracking and other than solidification cracking.

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