Failure of hydrided zircaloy-4 under equal-biaxial and plane-strain tensile deformation.
The fracture behavior of unirradiated Zircaloy-4 containing either solid hydride blisters or hydrided rims has been examined for the contrasting conditions of equal-biaxial and plane-strain tensile deformation at three temperatures (25, 300, and 375 C). Cold-worked and stress-relieved Zircaloy-4 sheet containing hydride blisters shows nearly identical failure strains in equal-biaxial and plane-strain tensile deformation for a wide range of blister or rim depths. In all cases, failure strains decrease rapidly with increasing hydride blister or rim thickness, especially in the 100 {micro}m range. Test temperature has a significant effect on ductility with failure strains at 300 and 375 C being much greater than at room temperature. The results indicate that the ductility of material containing hydride rims/blisters greater than 3040 {micro}m deep is limited by crack growth, which occurs in a mode I manner at 25 C but in a mixed mode I/II manner at 300 C (and at higher failure strain levels).
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- NRC; OUS; USDOE
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 925286
- Report Number(s):
- ANL/ET/JA-54493
- Journal Information:
- J. ASTM Inter., Journal Name: J. ASTM Inter. Journal Issue: Jun. 2005
- Country of Publication:
- United States
- Language:
- ENGLISH
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