气相渗氢工艺对锆合金氢含量及其分布的影响  

Effect of gas hydrogen infiltrating on hydrogen content and its distribution in zirconium alloy

作　　者：田大容 徐春容[1] 张伟[1] 陈尧 唐彦 杨忠波[1] Tian Darong;Xu Chunrong;Zhang Wei;Chen Yao;Tang Yan;Yang Zhongbo(National Key Laboratory of Nuclear Reactor Technology,Nuclear Power Institute of China,Chengdu Sichuan 610213,China)

机构地区：[1]中国核动力研究设计院核反应堆技术全国重点实验室,四川成都610213

出　　处：《金属热处理》2024年第12期94-99,共6页Heat Treatment of Metals

基　　金：国家重点研发计划(2022YFB1902400)。

摘　　要：针对Zr-Sn-Nb合金板材开展了气相渗氢研究,重点研究了渗氢时间和渗氢后退火时间对氢含量及其分布的影响。结果表明,随着渗氢时间的增加,氢化物含量增多,氢化物出现聚集,形成缠绕生长的条状结构,最终逐渐呈现细小网状分布;退火过程氢原子从外表面向壁厚中心位置扩散,从两端向中部扩散;氢化物含量越高,退火时间越长,氢化物扩散越充分,条状氢化物分解为多个细小氢化物并弥散均匀分布在锆基体中。应用指数函数对氢含量-渗氢时间的规律进行拟合,获得了Zr-Sn-Nb合金定量渗氢工艺与氢含量的对应关系。The gas hydrogen permeation process of Zr-Sn-Nb alloy sheet was studied,and the effects of hydrogen permeation time and annealing time on hydrogen content and its distribution were investigated.The results show that with the increase of hydrogen infiltration time,hydride content increases and the hydrides appear to aggregate,form a winding and growing strip structure,and finally gradually present a fine network distribution.During the annealing process,the hydrogen atoms spread from the outer surface to the center of the wall,and the two ends spread to the middle.The higher the hydride content,the longer the annealing time,the more fully the hydride diffusion,the strip hydrides decompose into several fine hydrides and dispersed evenly in the zirconium matrix.The exponential function was used to fit the law of hydrogen content-hydrogen infiltration time,and the corresponding relationship between the quantitative hydrogen infiltration process and hydrogen content of Zr-Sn-Nb alloy was obtained.

关 键 词：Zr-Sn-Nb合金 气相渗氢 渗氢后退火 氢化物 

分 类 号：TG156[金属学及工艺—热处理]