含Nb锆合金第二相及其与腐蚀行为关系研究进展

Research Progress of SPPs and Its Relation with Corrosion Properties in Nb-contained Zirconium Alloys

摘要:

含Nb锆合金具有优异的耐腐蚀性能、良好的机械性能和加工变形能力，是目前锆合金研究的重点。本文综述了近年来含Nb锆合金的研究现状，包括化学成分、变形及热处理工艺对第二相粒子析出的影响，介绍了锆合金腐蚀理论的研究进展，讨论了研究中存在的若干问题，为含Nb锆合金组织控制和耐腐蚀性能改善提供参考。

Abstract:

As current study emphases of zirconium alloys, Nb-contained zirconium alloys have excellent corrosion resistance, good mechanical properties and deformable properties. Recent research situation on Nb-contained zirconium alloys is summarized in the present paper, including the effects of chemical composition, deformation and heating treatment process on precipitation behavior of SPPs (second phase particles). Research progress of corrosion theory in zircaloy is also introduced, and lots of research problems are discussed. This paper can provide valuable references for microstructure control and corrosion resistance improvement in Nb-contained zirconium alloys.