Fig.1-26　Optical microstructures and tensile properties of the cladding tubes without immersion and after seawater immersion

Fig.1-26 Optical microstructures and tensile properties of the cladding tubes without immersion and after seawater immersion

Fig.1-26　Optical microstructures and tensile properties of the cladding tubes without immersion and after seawater immersion

Metallurgical observation and ring tensile tests were conducted for ring specimens cut from the cladding tube after seawater immersion. Consequently, not only was there no change in oxide film and hydride formation but also no degradation of ultimate tensile strength was observed.

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