| Abstract |
| The effect of heat treatment on corrosion behavior and mechanical properties of Zr-1.5 wt.% Nb alloy was investigated. The alloys of Zr-1.5 wt.%Nb containing different oxygen content of 700 and 2000 ppm were annealed for 1, 10 100, 500 hours at 470, 520 and 570oC. The microstructural characteristics of annealed specimens were investigated by using OM and TEM. The corrosion tests were carried out at 360oC water. The oxide characteristics were investigated by using low angle XRD and EIS. And mechanical properties were analyzed by using micro hardness, tensile and creep tester. The recrystallization behavior of Zr-1.5Nb alloy was affected by more annealing temperature than annealing time. The corrosion resistance was improved with increasing annealing time at each temperature, but was not affected by oxygen content. The hardness, tensile and creep properties of annealed alloy were decreased with increasing annealing time and temperature, but elongation was increased. The hardness of them were increased with increasing oxygen content. |
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| Key Words |
| Zr-1.5Nb, Corrosion, Oxygen, Annealing, Recrystallization |
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