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,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.]
氢对N36锆合金包壳管环向拉伸性能的影响
投稿时间:2015-09-20  修订日期:2015-10-25
中文关键词:  N36锆合金包壳管  氢含量  氢化物  环向拉伸性能
基金项目:辽宁省教育厅计划项目(L2012153)
中文摘要:
      核反应堆运行期间燃料元件锆合金包壳发生腐蚀吸氢至延性降低,包壳延性降低的程度与吸收的氢含量有必然的联系。采用气相渗氢方法,获得了氢含量在100~1000μg/g范围的试样,开展了不同氢含量对N36锆合金管环向拉伸性能的影响研究。结果表明,当氢含量高于约150μg/g左右时,延伸率随着氢含量的增加而降低,当氢含量达到1000μg/g左右,延伸率降低到9%左右,仍保留有一定的延性;1000μg/g范围内的氢含量对N36锆合金包壳管拉伸强度和屈服强度的影响都很小。吸氢后N36锆合金包壳管环向拉伸的断裂模式与氢含量有直接的关系,随着氢含量的增加,断口形式表现为从45°剪切断裂到杯锥状断裂再到正向断裂的特征。
Effect of the Hydrogen on the Ring Tensile Properties of N36 Zirconium Alloy Cladding Tubes
英文关键词:N36 zirconium alloy cladding tube  hydrogen concentration  hydride  ring tensile
英文摘要:
      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.
作者单位E-mail
徐春容 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 
赵文金 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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