Microstructure and properties of TiNbVMo-(Zr, Cr) refractory high entropy alloys for nuclear application

Abstract

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

CLC Number:

TG133+.4

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.

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