Effect of addition of Nb on phase stability of equiatomic CrFeMoV alloy

Saikumaran, A.; Mythili, R.

doi:10.1016/j.matchemphys.2022.127013

Cited by 3 publications

(2 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Laves phase is identified as the Fe 2 Nb‐type phase with the standard card PDF 17‐1908, which is consistent with the research conducted by Jiang. [ 21 ] Furthermore, the relative intensity of the Laves phase is significantly lower than that of the FCC phase, indicating that the FCC phase remains the dominant phase in the alloy system. This can be attributed to the high‐entropy effect, which greatly reduces the Gibbs free energy of the alloy system, making it easier for the alloy to form solid solutions rather than ordered compounds, especially at high temperatures.…”

Section: Resultsmentioning

confidence: 99%

“…With the increase in Nb content, the wear resistance and microhardness of the HEA coatings gradually improved, with the highest hardness reaching 631.1 HV. Saikumaran et al [ 21 ] introduced Nb into CrFeMoV HEAs, leading to the formation of a dual‐phase microstructure comprising BCC and Laves phases. Jiang et al [ 22 ] incorporated Nb into AlCoCrFeNi2.1 EHEAs, resulting in an alloy with a compressive yield strength of 1158 MPa and a ductility of 29.7%, primarily attributed to the precipitation strengthening of Laves phases and the solid solution strengthening of FCC and B2 phases.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Microstructure and Properties of AlCoCrFeNi2.1Nbx High‐Entropy Alloys Prepared by Selective Laser Melting

Cui,

Sun,

et al. 2023

Physica Status Solidi (a)

View full text Add to dashboard Cite

In this study, Nb element was introduced into the AlCoCrFeNi2.1 eutectic high‐entropy alloy to create a heterogeneous structure. AlCoCrFeNi2.1Nbx (x=0, 0.25, 0.5) eutectic high‐entropy alloys were fabricated using selective laser melting technology. The forming characteristics, microstructure, and mechanical properties of the AlCoCrFeNi2.1Nbx eutectic high‐entropy alloys were investigated. The results showed that the relative density of the samples increased and then decreased. The optimal process parameters were determined as laser power of 50 W, scanning speed of 400 mm/s, scanning spacing of 70 μm, and layer thickness of 30 μm. The primary microstructure of AlCoCrFeNi2.1Nbx alloys (x>0) consisted of a hypoeutectic structure comprising BCC, FCC, and Fe2Nb‐type Laves phases. With the addition of Nb element, the hardness of the high‐entropy alloy increased from 600.6 HV to 774 HV, the yield strength increased from 664.1 MPa to 1091.9 MPa, while the ductility slightly decreased. Furthermore, the strengthening mechanisms of the alloy were attributed to the precipitation strengthening and solid solution strengthening of the Laves phase, as well as the grain refinement effect. The wear resistance of the alloy improved gradually with the increasing Nb content, and AlCoCrFeNi2.1Nb0.5 exhibited the best wear resistance, primarily through adhesive wear.This article is protected by copyright. All rights reserved.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%