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Volume 38 Issue S1
Feb.  2025
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Bian Wei, Guo Lina, QiAN Jin, CHu Fengmin, Wang Huacai. Investigation on Behavior of Delayed Hydride Cracking in Zr-2.5Nb Pressure Tube Material[J]. Nuclear Power Engineering, 2017, 38(S1): 94-98. doi: 10.13832/j.jnpe.2017.S1.0094
Citation: Bian Wei, Guo Lina, QiAN Jin, CHu Fengmin, Wang Huacai. Investigation on Behavior of Delayed Hydride Cracking in Zr-2.5Nb Pressure Tube Material[J]. Nuclear Power Engineering, 2017, 38(S1): 94-98. doi: 10.13832/j.jnpe.2017.S1.0094

Investigation on Behavior of Delayed Hydride Cracking in Zr-2.5Nb Pressure Tube Material

doi: 10.13832/j.jnpe.2017.S1.0094
  • Received Date: 2017-04-21
  • Rev Recd Date: 2017-05-31
  • Available Online: 2025-02-09
  • In this paper, the behavior of delayed hydride cracking in Zr-2.5Nb pressure tube material containing 60 μg/g hydrogen has been investigated. During the experiments, the DHC crack growth was monitored by the force fluctuation. The crack propagation rate(DHCR)and the threshold stress intensity factor( KIH) were calculated later. Moreover, the influence of temperature and rolling direction was investigated. The results have shown that when the test temperature is 250℃, the rang of DHCR and KIH is 5.15×10-8~15.14×10-8 m/s and 16.55 ~18.49 MPa m1/2, respectively. When the test temperature is 200℃, the rang of DHCR and KIH is 2.11×10-8~2.36×10-8 m/s and 26.22~30.89 MPa m1/2, respectively. As the temperature decreases, the DHCR reduces while the value of KIH increases. When the preset crack direction is vertical to the rolling direction, the DHC phenomenon has not been observed.

     

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