核用TiNbVMo-(Zr, Cr)系难熔高熵合金的组织和性能

摘要/Abstract

摘要： 开发了三种新型单相BCC结构的韧性Ti₄₀Nb₂₅V₁₅Mo₅Zr₁₅、Ti₄₀Nb₃₀V₂₀Mo₅Zr₅和Ti₄₀Nb₃₀V₂₀Mo₅Cr₅难溶高熵合金(RHEAs).合金在室温下均表现良好的强韧性,其中Ti₄₀Nb₂₅V₁₅Mo₅Zr₁₅的最大抗拉强度为1 037 MPa,随着Zr元素含量的降低,Ti₄₀Nb₃₀V₂₀Mo₅Zr₅的断裂延伸率从8.94%提高至13.96%.Ti₄₀Nb₃₀V₂₀Mo₅Cr₅在450 ℃下进行100、300、700 h的静态铅铋饱和氧腐蚀试验后仅形成单层腐蚀扩散层,腐蚀层的厚度没有随时间的增加出现明显变化.

关键词: 核用, 难熔高熵合金, 力学性能, 液态铅铋腐蚀

Abstract: Three novel ductile and single-phase BCC structurerefractory high-entropy alloys (RHEAs)Ti₄₀Nb₂₅V₁₅Mo₅Zr₁₅ ,Ti₄₀Nb₃₀V₂₀Mo₅Zr₅ andTi₄₀Nb₃₀V₂₀Mo₅Cr₅were developed, and the alloy, exhibit good strength and toughness at room temperature,the alloy Ti₄₀Nb₂₅V₁₅Mo₅Zr₁₅has a maximum tensile strength of 1 037 MPa. With the decrease of Zr content, the fracture elongation of Ti₄₀Nb₃₀V₂₀Mo₅Zr₅increases from 8.94% to 13.96%.A single layer of corrosion diffusion is only formedafter a static lead-bismuth saturated oxygen corrosion testto Ti₄₀Nb₃₀V₂₀Mo₅Cr₅at 450 ℃ for 100, 300, and 700 h.The thickness of the corrosion layer dno't change significantly with time.

Key words: nuclear, refractory high entropy alloys, mechanical properties, liquid lead bismuth corrosion

中图分类号:

TG133+.4

李季菁, 胡世文, 刘德学. 核用TiNbVMo-(Zr, Cr)系难熔高熵合金的组织和性能[J]. 兰州理工大学学报, 2024, 50(2): 1-8.

LI Ji-jing, HU Shi-wen, LIU De-xue. Microstructure and properties of TiNbVMo-(Zr, Cr) refractory high entropy alloys for nuclear application[J]. Journal of Lanzhou University of Technology, 2024, 50(2): 1-8.

参考文献

[1] ALEMBERTI A,SMIRNOV V,SMITH C F,et al.Overview of lead-cooled fast reactor activities [J].Progress in Nuclear Energy,2014,77:300-307.
[2] CHARIT I.Accident tolerant nuclear fuels and cladding materials [J].JOM,2018,70(2):173-175.
[3] 张贺新,都雨辉,李艳春,等.激光选区熔化制备高熵合金的研究进展 [J].哈尔滨工程大学学报,2023,44(5):884-894.
[4] DUAN Z,YANG H,SATOH Y,et al.Current status of materials development of nuclear fuel cladding tubes for light water reactors [J].Nuclear Engineering and Design,2017,316:131-150.
[5] GONG X,SHORT M P,AUGER T,et al.Environmental degradation of structural materials in liquid lead- and lead-bismuth eutectic-cooled reactors [J].Progress in Materials Science,2022,126:100920.
[6] SENKOV O N,PILCHAK A L,SEMIATIN S L.Effect of cold deformation and annealing on the microstructure and tensile properties of a HfNbTaTiZr refractory high entropy alloy [J].Metallurgical and Materials Transactions A,2018,49(7):2876-2892.
[7] MIRACLE D B,SENKOV O N.A critical review of high entropy alloys and related concepts [J].Acta Materialia,2017,122:448-511.
[8] GORSSE S,NGUYEN M H,SENKOV O N,et al.Database on the mechanical properties of high entropy alloys and complex concentrated alloys [J].Data in Brief,2018,21:2664-2678.
[9] CHENG Z,SUN J,GAO X,et al.Irradiation effects in high-entropy alloys and their applications [J].Journal of Alloys and Compounds,2023,930:166768.
[10] LU Y,HUANG H,GAO X,et al.A promising new class of irradiation tolerant materials:Ti₂ZrHfV_0.5Mo_0.2 high-entropy alloy [J].Journal of Materials Science & Technology,2019,35(3):369-373.
[11] ZHANG Z,HAN E H,XIANG C.Effect of helium ion irradiation on short-time corrosion behavior of two novel high-entropy alloys in simulated PWR primary water [J].Corrosion Science,2021,191:109742.
[12] YANG T,XIA S,GUO W,et al.Effects of temperature on the irradiation responses of Al_0.1CoCrFeNi high entropy alloy [J].Scripta Materialia,2018,144:31-35.
[13] ZHOU Q Y,SHEIKH S,OU P,et al.Corrosion behavior of Hf_0.5Nb_0.5Ta_0.5Ti_1.5Zr refractory high-entropy in aqueous chloride solutions [J].Electrochemistry Communications,2019,98:63-68.
[14] XIANG C,HAN E H,ZHANG Z M,et al.Design of single-phase high-entropy alloys composed of low thermal neutron absorption cross-section elements for nuclear power plant application [J].Intermetallics,2019,104:143-153.
[15] XIANG C,FU H M,ZHANG Z M,et al.Effect of Cr content on microstructure and properties of Mo_0.5VNbTiCr_x high-entropy alloys [J].Journal of Alloys and Compounds,2020,818:153352.
[16] SENKOV O N,WILKS G B,MIRACLE D B,et al.Refractory high-entropy alloys [J].Intermetallics,2010,18(9):1758-1765.
[17] BORG C K H,FREY C,MOH J,et al.Expanded dataset of mechanical properties and observed phases of multi-principal element alloys [J].Scientific Data,2020,7(1):430.
[18] STEPANOV N D,YURCHENKO N Y,SHAYSULTANOV D G,et al.Effect of Al on structure and mechanical properties of Al _x NbTiVZr(x=0,0.5,1,1.5) high entropy alloys [J].Materials Science and Technology,2015,31(10):1184-1193.
[19] YURCHENKO N Y,PANINA E S,ZHEREBTSOV S V,et al.Microstructure evolution of a novel low-density Ti-Cr-Nb-V refractory high entropy alloy during cold rolling and subsequent annealing [J].Materials Characterization,2019,158:109980.
[20] HAN Z D,LUAN H W,LIU X,et al.Microstructures and mechanical properties of Ti NbMoTaW refractory high-entropy alloys [J].Materials Science and Engineering A,2018,712:380-385.
[21] YAO H W,QIAO J W,GAO M C,et al.NbTaV-(Ti,W) refractory high-entropy alloys:experiments and modeling [J].Materials Science and Engineering A,2016,674:203-211.
[22] JUAN C C,TSAI M H,TSAI C W,et al.Simultaneously increasing the strength and ductility of a refractory high-entropy alloy via grain refining [J].Materials Letters,2016,184:200-203.
[23] CHEN Y,XU Z,WANG M,et al.A single-phase V_0.5Nb_0.5ZrTi refractory high-entropy alloy with outstanding tensile properties [J].Materials Science and Engineering A,2020,792:139774.
[24] FENG R,FENG B,GAO M C,et al.Superior high-temperature strength in a supersaturated refractory high-entropy alloy [J].Advanced Materials,2021,33(48):2102401.
[25] SENKOV O N,SENKOVA S V,WOODWARD C,et al.Low-density,refractory multi-principal element alloys of the Cr-Nb-Ti-V-Zr system:microstructure and phase analysis [J].Acta Materialia,2013,61(5):1545-1557.
[26] YURCHENKO N Y,STEPANOV N D,GRIDNEVA A O,et al.Effect of Cr and Zr on phase stability of refractory Al-Cr-Nb-Ti-V-Zr high-entropy alloys [J].Journal of Alloys and Compounds,2018,757:403-414.
[27] STEPANOV N D,YURCHENKO N Y,PANINA E S,et al.Precipitation-strengthened refractory Al_0.5CrNbTi₂V_0.5 high entropy alloy [J].Materials Letters,2017,188:162-164.
[28] SENKOV O N,RAO S,CHAPUT K J,et al.Compositional effect on microstructure and properties of NbTiZr-based complex concentrated alloys [J].Acta Materialia,2018,151:201-215.
[29] WU Y D,CAI Y H,CHEN X H,et al.Phase composition and solid solution strengthening effect in TiZrNbMoV high-entropy alloys [J].Materials & Design,2015,83:651-660.
[30] SENKOV O N,SENKOVA S V,MIRACLE D B,et al.Mechanical properties of low-density,refractory multi-principal element alloys of the Cr-Nb-Ti-V-Zr system [J].Materials Science and Engineering A,2013,565:51-62.
[31] SCHROER C,WEDEMEYER O,SKRYPNIK A,et al.Corrosion kinetics of steel T91 in flowing oxygen-containing lead-bismuth eutectic at 450 ℃ [J].Journal of Nuclear Materials,2012,431(1/2/3):105-112.
[32] SCHROER C,KOCH V,WEDEMEYER O,et al.Silicon-containing ferritic/martensitic steel after exposure to oxygen-containing flowing lead-bismuth eutectic at 450 and 550 ℃ [J].Journal of Nuclear Materials,2016,469:162-176.