摘要
将Zr-Sn-Nb新锆合金样品分别进行多种变形热处理,用透射电子显微镜研究它们的显微组织和第二相粒子。然后,将它们放入高压釜中,在350℃、16.8 MPa、含70μg/g Li+的LiOH水溶液中腐蚀。结果表明:580℃-3 h/冷轧/500℃-30 h处理的样品具有最好的耐腐蚀性能,这归因于该样品中Zr-Nb-Fe第二相粒子细小分布均匀、第二相粒子体积分数最高,从而导致基体中的Nb元素固溶含量最低。
After being treated in different ways, Zr-Sn-Nb zirconium alloy specimens were exposed in 70 μg/g Li^＋ LiOH aqueous solution at 350 ℃ and 16. 8 MPa. The microstructures and second phase particles of these specimens were observed by transmission electron microscope （TEM）. The specimens treated by 580 ℃/C. R/500 ℃ show best corrosion resistance among all the specimens. TEM observation shows that a large number of second phase particles exist in the specimen, which are fine and dispersed homogeneously, result in the lowest Nb content in the matrix.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2007年第6期711-715,共5页
Atomic Energy Science and Technology
基金
国家自然科学基金资助项目(50571056)
上海市科委自然基金资助项目(04ZR14057)
核燃料及材料国家级重点实验室基金
上海市重点学科建设项目(T0101)
关键词
热处理
耐腐蚀性能
显微组织
第二相粒子
heat treatment
corrosion resistance
microstructure
second phase particles
