The effect of thermomechanical processing on the creep behavior and fracture toughness of Thixomolded® AM60 alloy

Z. Chen, J. Huang, R. Decker, S. LeBeau, C. J. Boehlert

    Research output: ResearchConference contribution

    • 2 Citations

    Abstract

    Creep and fracture toughness experiments were performed on a commercially available magnesium-aluminum alloy (AM60) after three processing treatments: (1) As-Thixomolded® (as-molded), (2) Thixomolded® then thermomechanically processed (TTMP), and (3) Thixomolded® then TTMP then annealed (annealed). The conventional tensile-creep experiments were performed at applied stresses ranging between 20-75MPa and temperatures between 373-473K (100-200°C). In-situ tensile-creep tests were performed on selected samples. The as-molded material exhibited creep resistance superior to the thermomechanically processed materials. Creep experiments indicated grain boundary cracking, and grain size was expected to be an important microstructural parameter that affected the creep behavior. Fracture toughness experiments were performed at room temperature (RT) on single edge notched tension (SENT) samples. The TTMP and annealed materials exhibited fracture toughness values almost twice that of the as-molded material.

    LanguageEnglish (US)
    Title of host publicationMagnesium Technology
    Pages85-89
    Number of pages5
    StatePublished - 2011
    EventMagnesium Technology 2011 - TMS 2011 Annual Meeting and Exhibition - San Diego, CA, United States
    Duration: Feb 27 2011Mar 3 2011

    Other

    OtherMagnesium Technology 2011 - TMS 2011 Annual Meeting and Exhibition
    CountryUnited States
    CitySan Diego, CA
    Period2/27/113/3/11

    Profile

    Fracture toughness
    Creep
    Processing
    Experiments
    Temperature
    Creep resistance
    Magnesium alloys
    Aluminum alloys
    Grain boundaries

    Keywords

    • Creep
    • Fracture toughness
    • Lightweight alloys
    • Magnesium

    ASJC Scopus subject areas

    • Engineering(all)
    • Materials Science(all)

    Cite this

    Chen, Z., Huang, J., Decker, R., LeBeau, S., & Boehlert, C. J. (2011). The effect of thermomechanical processing on the creep behavior and fracture toughness of Thixomolded® AM60 alloy. In Magnesium Technology (pp. 85-89)

    The effect of thermomechanical processing on the creep behavior and fracture toughness of Thixomolded® AM60 alloy. / Chen, Z.; Huang, J.; Decker, R.; LeBeau, S.; Boehlert, C. J.

    Magnesium Technology. 2011. p. 85-89.

    Research output: ResearchConference contribution

    Chen, Z, Huang, J, Decker, R, LeBeau, S & Boehlert, CJ 2011, The effect of thermomechanical processing on the creep behavior and fracture toughness of Thixomolded® AM60 alloy. in Magnesium Technology. pp. 85-89, Magnesium Technology 2011 - TMS 2011 Annual Meeting and Exhibition, San Diego, CA, United States, 2/27/11.
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