摘要
锆合金因其优良性能在核电燃料包壳领域有着广泛应用,燃料包壳服役时的关注要点为其耐腐蚀性能,因实际堆内存在辐照因素影响材料组织和性能,辐照条件下锆合金的腐蚀机理逐渐成为当前研究热点。本文综述了国内外有关辐照对锆合金微观组织结构和耐腐蚀性能影响的研究进展,在此基础上探讨了辐照导致第二相非晶化的过程及其机理,主要包括Zr-Sn系和含Nb锆合金中第二相辐照非晶化行为的差异,由此分析不同类型第二相在辐照条件下加剧腐蚀效应的机理。最后基于分析讨论,提出锆合金在辐照条件下提升耐腐蚀性方面的设计思路,为深入研究辐照对锆合金腐蚀性能的影响提供参考,并对锆合金燃料包壳领域今后的研究方向作出展望。
Zirconium alloy is widely used in fuel cladding due to excellent properties,and corrosion is one of the main concerns during its service term.Actually,the irradiation in reactor can affect the structure and performance of zirconium alloy,and therefore the research on the corrosion mechanism under irradiation gradually becomes one of the current hot spots.This paper reviews the domestic and foreign related research progress on the effects of irradiation on the microstructure and corrosion properties of zirconium alloys.It mainly includes the difference in the amorphization behavior of the second phase in the Zr-Sn series and the Nb-containing zirconium alloys,so as to analyze the mechanism of different types of second phases intensifying the corrosion effect under irradiation.Based on the analysis and discussion,the new idea for improving the corrosion resistance under irradiation is proposed,which provides reference to the effect of irradiation on corrosion properties of zirconium alloy,and prospects the future research direction of zirconium fuel cladding.
作者
全琪炜
刘向兵
徐超亮
张晏玮
李远飞
钱王洁
贾文清
吴奕初
赵文增
QUAN Qiwei;LIU Xiangbing;XU Chaoliang;ZHANG Yanwei;LI Yuanfei;QIAN Wangjie;JIA Wenqing;WU Yichu;ZHAO Wenzeng(Suzhou Nuclear Power Research Institute Co.,Ltd.,Suzhou 215000,Jiangsu,China;School of Physics and Technology,Wuhan University,Wuhan 430000,China)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2022年第S01期375-380,共6页
Materials Reports
基金
国家自然科学基金(11975171)
关键词
锆合金
氧化腐蚀
辐照
第二相
非晶化
zirconium alloy
oxidation corrosion
irradiation
second phase
amorphization
