Effects of V Addition on Microstructure and Corrosion Resistance of the Zr-1Nb-0.1Fe Alloys

Qu Jingwen; Hui Boning; Shi Minghua; Tian Hang; Xu You

doi:10.15980/j.tzzz.2019.05.004

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Effects of V Addition on Microstructure and Corrosion Resistance of the Zr-1Nb-0.1Fe Alloys
Vol. 39, Issue 5, Pages: 476-479(2019)
Published： 2019 ，
DOI： 10.15980/j.tzzz.2019.05.004

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[1]渠静雯,惠泊宁,石明华,田航,徐悠.V对Zr-1Nb-0.1Fe合金显微组织及耐腐蚀性能的影响[J].特种铸造及有色合金,2019,39(05):476-479.

Qu Jingwen, Hui Boning, Shi Minghua, et al. Effects of V Addition on Microstructure and Corrosion Resistance of the Zr-1Nb-0.1Fe Alloys. [J]. Special Casting & Nonferrous Alloys 39(5):476-479(2019)
[1]渠静雯,惠泊宁,石明华,田航,徐悠.V对Zr-1Nb-0.1Fe合金显微组织及耐腐蚀性能的影响[J].特种铸造及有色合金,2019,39(05):476-479. DOI： 10.15980/j.tzzz.2019.05.004.

Qu Jingwen, Hui Boning, Shi Minghua, et al. Effects of V Addition on Microstructure and Corrosion Resistance of the Zr-1Nb-0.1Fe Alloys. [J]. Special Casting & Nonferrous Alloys 39(5):476-479(2019) DOI： 10.15980/j.tzzz.2019.05.004.

摘要

采用真空自耗电弧炉熔炼制备了Zr-1Nb-0.1Fe和Zr-1Nb-0.1Fe-0.05V合金

通过OM、SEM和XRD观察分析了两种合金的金相组织、第二相粒子以及在360℃、18.6MPa条件下在LiOH与硼酸配制的Li+B水溶液中长期腐蚀后的腐蚀氧化膜相组成

研究了V对Zr-1Nb-0.1Fe合金微观组织及耐腐蚀性能的影响。结果表明

Zr-1Nb-0.1Fe合金中添加0.05%的V能够细化组织晶粒

形成尺寸较小且弥散分布的第二相粒子

并改变Zr-1Nb-0.1Fe合金在Li+B水溶液中氧化膜微晶结构

具有稳定氧化膜的四方相（tZrO

）

提高了合金在360℃、18.6MPa条件下的Li+B水溶液中的耐腐蚀性能。

Abstract

Two alloys of Zr-1 Nb-0.1 Fe and Zr-1 Nb-0.1 Fe-0.05 V（mass fraction

%）alloy were prepared by vacuum consumable arc furnace smelting method.The microstructure

second phase particles and phase composition of oxide film formed after long-time corroding at 360℃and 18.6 MPa in Li+B aqueous solution were analyzed by OM

SEM and XRD

and effects of the addition of V on microstructure and corrosion resistance of the Zr-1 Nb-0.1 Fe alloy were investigated.The results show that the addition of V in Zr-1 Nb-0.1 Fe can refine the grain size and form the tiny and dispersedly distributed second phase particle as well as changing the phase structure of oxide film

stabling the tetragonal phase in oxide film and improve corrosion resistance of zirconium alloy in aqueous solution with Li+B at 360℃、18.6 MPa.