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has been cited by the following article:

• TITLE: A Case Study of the Susceptibility of Zircaloy-4 Sheathing to Iodine Stress-Corrosion Cracking as a Function of Their Metallurgical History in Fabrication

  AUTHORS: Mohsen Farahani, Paul K. Chan, Jennifer L. Snelgrove, Diane Wowk

  KEYWORDS: CANDU Zircaloy-4 Fuel Cladding (Sheathing), Post-Production Residual Stress History, Pellet-Cladding Mechanical Interaction, Iodine Stress-Corrosion Cracking

  JOURNAL NAME: World Journal of Nuclear Science and Technology, Vol.15 No.3, July 25, 2025

  ABSTRACT: This experimental undertaking has primarily focused on determining the dependency of Pellet-Cladding Mechanical Interaction (PCMI) conditions and the resulting Iodine Stress-Corrosion Cracking (ISCC) failures on residual stresses within a wide range of manufactured CANDU Zircaloy-4 cladding (sheathing). ISCC failures remain a fuel performance concern for water-cooled reactors, including CANDU reactors, accommodating a multitude of power maneuverability events, at high discharge burnups. A multi-year examination of more recent and vintage Zircaloy-4 sheathing samples and their associated post-production stress state from two independent sources is provided. A relationship between the residual stress history in manufacturing processes of Zircaloy-4 and ISCC has been investigated, by static loading of slotted ring samples in iodine-methanol solutions (10 g·L−1) at room temperature. Results indicate that inherent residual tensile stress state of the sheathing above a certain threshold is strongly correlated to the failure in ISCC process.