| Abstract |
| The effects of the ordering reaction on high temperature mechanical behavior is investigated by tensile tests at 2×10-2/s-3.3×10-5/s up to 745˚C. The tensile deformed region is examined by differential scanning calorimeter (DSC), TEM, and high resolution neutron diffraction (HRPD). The results showed that a plateau of tensile strength appeared at 150-500˚C whereas the elongation minimum occurred at about 600˚C. This suggests that the occurrence of a plateau does not cause the elongation minimum. The temperature of the elongation minimum decreases with the strain rate, HRPD results show a lattice contraction in the tensile deformed specimen at the temperature of the plateau occurring region. The plateau of tensile strength, the lattice contraction, and the occurrence of serration appeared in the same temperature region. |
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| Key Words |
| Alloy 600, ordering reaction, strain induced ordering, lattice contraction, serration |
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