TY - JOUR
T1 - Characterization of Stress Corrosion Cracks in Ni-Based Weld Alloys 52, 52M and 152 Grown in High-Temperature Water
AU - Xie, Yi
AU - Wu, Yaqiao
AU - Burns, Jatuporn
AU - Zhang, Jinsuo
N1 - Xie, Yi; Wu, Yaqiao; Burns; Jatuporn; and Zhang, Jinsuo. (2016). "Characterization of Stress Corrosion Cracks in Ni-Based Weld Alloys 52, 52M and 152 Grown in High-Temperature Water". Materials Characterization, 112, 87-97. https://doi.org/10.1016/j.matchar.2015.12.005
PY - 2016/2/1
Y1 - 2016/2/1
N2 - Ni-based weld alloys 52, 52M and 152 are extensively used in repair and mitigation of primary water stress corrosion cracking (SCC) in nuclear power plants. In the present study, a series of microstructure and microchemistry at the SCC tips of these alloys were examined with scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), scanning transmission electron microscopy (STEM) and energy filtered transmission electron microscopy (EFTEM). The specimens have similar chemical compositions and testing conditions. Intergranular (IG) and transgranular (TG) SCC was observed in all of them. The cracks were filled with nickel-oxides and partial precipitations of chrome carbides (CrCs), niobium carbides (NbCs), titanium nitrides (TiNs) and silicon carbides (SiCs), while iron (Fe) was largely dissolved into the solution. However, the crack densities, lengths and distributions were different for all three specimens.
AB - Ni-based weld alloys 52, 52M and 152 are extensively used in repair and mitigation of primary water stress corrosion cracking (SCC) in nuclear power plants. In the present study, a series of microstructure and microchemistry at the SCC tips of these alloys were examined with scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), scanning transmission electron microscopy (STEM) and energy filtered transmission electron microscopy (EFTEM). The specimens have similar chemical compositions and testing conditions. Intergranular (IG) and transgranular (TG) SCC was observed in all of them. The cracks were filled with nickel-oxides and partial precipitations of chrome carbides (CrCs), niobium carbides (NbCs), titanium nitrides (TiNs) and silicon carbides (SiCs), while iron (Fe) was largely dissolved into the solution. However, the crack densities, lengths and distributions were different for all three specimens.
KW - light water reactor
KW - nickel alloy 52/52M/152
KW - scanning electron microscopy
KW - stress corrosion cracking
KW - transmission electron microscopy
KW - weld
UR - https://scholarworks.boisestate.edu/mse_facpubs/262
UR - https://doi.org/10.1016/j.matchar.2015.12.005
M3 - Article
SN - 1044-5803
JO - Materials Characterization
JF - Materials Characterization
ER -