Evaluation of solidification cracking susceptibility of heat-resistant magnesium alloy produced by semi-solid injection molding process

Toshio Fujii, Motomichi Yamamoto, Kenji Shinozaki, Ryota Misawa, Atsushi Nagai, Makoto Yoshida, Tatsuya Tanaka

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    Abstract

    New tentative semi-solid injection molding machine for magnesium alloy which was able to control solid fraction from 0 to 30% was developed. The solidification cracking susceptibility of the heat-resistant magnesium alloy containing 4% Al and 3% Ca fabricated by semi-solid injection molding and die-casting were investigated. The critical strain for solidification cracking of the magnesium alloy was obtained by U-type hot cracking test using in-situ observation method. High temperature ductility curve between liquidus and solidus temperatures were compared with semi-solid injection molding and die-casting. As result, solidification cracking susceptibility of semi-solid injection molding process with solid fraction of 25% was better than that of die-casting.

    Original languageEnglish
    Pages (from-to)223-228
    Number of pages6
    JournalKeikinzoku/Journal of Japan Institute of Light Metals
    Volume63
    Issue number6
    DOIs
    Publication statusPublished - 2013

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    Keywords

    • Fracture strain
    • Heat-resistant magnesium alloy
    • Injection molding
    • Semi-solid process
    • Solidification cracking

    ASJC Scopus subject areas

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

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