Dynamic mechanical behavior of fe3al under tensile impact

Yanxiong Liu, Yuanming Xia, Mingwei Chen, Dongliang Lin

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The loading tests of FejAl under tensile impact have been carried out by a self-designed rotating circular disk tensile impact apparatus. An experimental study of Fe3Al in the strain rate range from 80s" ' to 1 200s"1 was performed and the complete stress-strain curves under tensile impact were obtained. On the basis of the experimental results, it is believed that Fe3Al obviously exists dynamic ductility and effect of strain-rate hardening. The yield strength, ultimate strength and failure strain increase with increasing strain rate. Based on the linear least-squares fit, the relationship between the yield strength, ultimate strength, failure strain and strain rate under tensile impact was obtained. At the same time, one-dimensional macro-constitutive equation for Fe3Al under tensile impact according to the elastic-viscoplastic constitutive theory was derived.

    Original languageEnglish
    Pages (from-to)140-141
    Number of pages2
    JournalTransactions of Nonferrous Metals Society of China (English Edition)
    Volume9
    Issue numberSUPPL. 1
    Publication statusPublished - 1999 Dec 1

    Keywords

    • Ductility strain-rate
    • Fe3al tensile impact dynamic
    • Hardening

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Geotechnical Engineering and Engineering Geology
    • Metals and Alloys
    • Materials Chemistry

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