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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48171

Title: Effect of hydride orientation on fracture toughness of Zircaloy-4 cladding
Authors: Hsiao-Hung Hsu
Leu-Wen Tsay
Contributors: 國立臺灣海洋大學:光電與材料科技學系
Date: 2011-01
Issue Date: 2018-08-15T03:20:13Z
Publisher: Journal of Nuclear Materials
Abstract: Abstract: Hydrogen embrittlement is one of the major degradation mechanisms for high burnup fuel cladding during reactor service and spent fuel dry storage, which is related to the hydrogen concentration, morphology and orientation of zirconium hydrides. In this work, the J-integral values for X-specimens with different hydride orientations are measured to evaluate the fracture toughness of Zircaloy-4 (Zry-4) cladding. The toughness values for Zry-4 cladding with various percentages of radial hydrides are much smaller than those with circumferential hydrides only in the same hydrogen content level at 25 °C. The fractograghic features reveal that the crack path is influenced by the orientation of zirconium hydride. Moreover, the fracture toughness measurements for X-specimens at 300 °C are not sensitive to a variation in hydride orientation but to hydrogen concentration.
Relation: 408(1) pp.67-72
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48171
Appears in Collections:[光電科學研究所] 期刊論文

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