Internal Stress during Creep in a Die-Cast AM50 Magnesium Alloy at 473 K

  • Terada Yoshihiro
    Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology
  • Mori Yukako
    Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology
  • Sato Tatsuo
    Department of Metallurgy and Ceramics Science, Tokyo Institute of Technology

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抄録

The internal stress during high temperature creep was investigated for the die-cast AM50 magnesium alloy at 473 K through the strain-transient dip test technique. The microstructure of the alloy is characterized by fine α-Mg grains together with the β-Mg17Al12 particles located on the grain boundaries. The internal stress is proportional to the applied stress, when the applied stress ranges below the yield stress. The ratio of the internal stress to the applied stress is 0.36 for the alloy, which is about half of those for conventional pure metals such as Cu, α-Fe and Ni. The small internal stress is a characteristic feature in the creep for the alloy.

収録刊行物

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 47 (10), 2493-2496, 2006

    公益社団法人 日本金属学会

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