Fractographic Aspects of Stress Corrosion Failure of Zircaloy 2 in CH3OH HCL Solutions

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Abstract:

Fracture surface of Zircaloy-2 specimens tested under constant crosshead speed in CH3OH/0.4 Vol. %HCI solution with and without selenium (25 ppm) addition was studied. Using a combined process of deformation and annealing, coarse grained material was also obtained and examined. Two modes of stress corrosion crack propagation were observed: an intergranular zone caused by stress assisted anodic dissolution, and a transgranular cleavage zone, due to hydrogen absorption.

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Journal title

volume 3  issue 1

pages  23- 30

publication date 1990-05-01

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