Effect of V on microstructure and properties of Fe-rich non-equiatomic FeCrCoNi high-entropy alloy

doi:10.13251/j.issn.0254-6051.2024.05.004

Abstract

Abstract: FeCrCoNi high-entropy alloys were prepared using mechanical ball milling and discharge plasma sintering, the V element was introduced by decreasing the content of Co and Ni elements, and the effect of V on microstructure and mechanical properties of the Fe₄₅Cr₁₅Co₁₀Ni₃₀ alloy was investigated. The results show that the V-containing high-entropy alloys form V-rich BCC phases compared with the Fe₄₅Cr₁₅Co₁₀Ni₃₀ alloy, the morphology and distribution of the BCC phases change with the increase of V content. The yield strength and compressive strength of the Fe₄₅Cr₁₅Co_2.5Ni_22.5V₁₅ alloy reach the highest of 869 ± 8 MPa and 1675 ±5 MPa, respectively, and the strain rate of 46.1%±1.7%, also maintains a high level. The introduction of V effectively improves the hardness and compressive properties of the Fe₄₅Cr₁₅Co₁₀Ni₃₀ alloy, and the alloy with good strength and plasticity matching can be obtained.

Key words: FeCrCoNi high-entropy alloy, mechanical ball milling, discharge plasma sintering, V element, mechanical properties

CLC Number:

TG146.2

Wang Shuliang, Mao Yidian, Li Qilin, Zhou Lujiang, Xi Yuchen, Zhang Huali. Effect of V on microstructure and properties of Fe-rich non-equiatomic FeCrCoNi high-entropy alloy[J]. Heat Treatment of Metals, 2024, 49(5): 22-28.

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