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徐春容,赵文金.氢对N36锆合金包壳管环向拉伸性能的影响[J].稀有金属材料与工程(英文),2017,46(12):3922~3927.[Xu Chunrong,Zhao Wenjin.Effect of the Hydrogen on the Ring Tensile Properties of N36 Zirconium Alloy Cladding Tubes[J].Rare Metal Materials and Engineering,2017,46(12):3922~3927.]
Effect of the Hydrogen on the Ring Tensile Properties of N36 Zirconium Alloy Cladding Tubes
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Received:September 20, 2015  Revised:October 25, 2015
Key words: N36 zirconium alloy cladding tube  hydrogen concentration  hydride  ring tensile
Foundation item:辽宁省教育厅计划项目(L2012153)
Author NameAffiliationE-mail
Xu Chunrong 中国核动力研究设计院反应堆燃料及材料重点实验室 tomato204@163.com 
Zhao Wenjin 中国核动力研究设计院反应堆燃料及材料重点实验室  
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      Zirconium alloy fuel cladding picks up hydrogen during operation through a corrosion reaction with coolant water, which reduces the ductility of the cladding. However, there is a connection between the extent of hydride embrittlement and hydrogen concentration. The effect of hydrides formed by the gas hydrogen charging method with hydrogen content between 100~1000 μg/g on the ring tensile properties of N36 zirconium alloy cladding tubes of was investigated. It was found that the ductility reduced with the increasing of hydrogen concentration when exceeding 150 μg/g hydrogen content level, the ductility reduced to 9% when the hydrogen content was about 1000 μg/g, still remain a certain ductility. But the hydrogen concentration had little effect on the tensile strength and yield strength. The fracture pattern was found to depend strongly on the hydrogen concentration . With the increase of hydrogen , the fracture types were45°shear type fracture, cup and cone type fracture and chisel edge type fracture.