Corrosion behavior and passive film characteristics of AlNbTiZrSix high-entropy alloys in simulated seawater environment

Bi, Da; Chang, Yue; Luo, Hong; Pan, Zhimin; Zhao, Qiancheng; Cheng, Hongxu; Wang, Xuefei; Qiao, Chunyu; Ni, Zeqing; Liu, Aoyu; Li, Xiaogang

doi:10.1016/j.corsci.2023.111530

Cited by 23 publications

(3 citation statements)

References 91 publications

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“…This dual-phase structure plays a crucial role in determining the mechanical and corrosion properties of the alloys. Such investigations highlight the nuanced interplay between alloy composition and microstructure, providing crucial insights for optimizing HEA performance in specific environmental conditions [76].…”

Section: Properties Of High-entropy Alloysmentioning

confidence: 99%

A Modern Approach to HEAs: From Structure to Properties and Potential Applications

Nartita,

Ionita,

Demetrescu

2024

Crystals

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High-entropy alloys (HEAs) are advanced materials characterized by their unique and complex compositions. Characterized by a mixture of five or more elements in roughly equal atomic ratios, these alloys diverge from traditional alloy formulations that typically focus on one or two principal elements. This innovation has paved the way for subsequent studies that have expanded our understanding of HEAs, highlighting the role of high mixing entropy in stabilizing fewer phases than expected by traditional phase prediction methods like Gibbs’s rule. In this review article, we trace the evolution of HEAs, discussing their synthesis, stability, and the influence of crystallographic structures on their properties. Additionally, we highlight the strength–ductility trade-off in HEAs and explore strategies to overcome this challenge. Moreover, we examine the diverse applications of HEAs in extreme conditions and their promise for future advancements in materials science.

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Section: Properties Of High-entropy Alloysmentioning

confidence: 99%

A Modern Approach to HEAs: From Structure to Properties and Potential Applications

Nartita,

Ionita,

Demetrescu

2024

Crystals

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“…Additionally, the previous results showed that the stainless-steel corrosion resistance, especially the pitting tolerance, was dramatically affected by the flaws in the passive film [19][20][21]. The disconnected-pores in the cladding layer are considered as the flaws in the passive film on the surface of the stainless steel [22]. However, it is not clear how these flaws affect the corrosion behavior of the cladding layer.…”

Section: Introductionmentioning

confidence: 99%

Coupling Effect of Disconnected Pores and Grain Morphology on the Corrosion Tolerance of Laser-Clad 316L Coating

Zhang,

Dong,

Han

et al. 2023

Coatings

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The corrosion resistance of 316L cladding layers was addressed via the electrochemical test, to illustrate the coupling effect of the disconnected pores and grain morphology on the corrosion tolerance of 316L cladding layers. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and electrochemical testing were employed to characterize the microstructure, elemental distribution, phase composition, and corrosion resistance of the cladding layers. The results indicate that the disconnected porosity in the surface of the cladding layer decreased from 0.79% to 0.48% and the grain morphology underwent a transformation from equiaxed crystals to columnar and lath crystals, with the increasing scanning speed. The primary phase in the cladding layer was γ-Fe. Under the dual effect of a low disconnected porosity and grain morphology, the corrosion potential of the cladding layer became more electropositive from −568 mVSCE to −307 mVSCE, and the corrosion current density reduced from 4.664 μA∙cm−2 to 1.645 μA∙cm−2. The pitting potential improved from 0.005 VSCE to 0.575 VSCE as the scanning speed increased. Thus, the non-connected pores in the 316L cladding layer also affected the corrosion resistance, especially the pitting resistance. The corrosion resistance of the cladding layer can be significantly enhanced via the control of the disconnected pores and grain morphology.

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“…Additionally, with the increase of Al concentration, the AlxCoCrFeNi alloy exhibits good corrosion resistance in a 3.5 wt% NaCl solution due to the thicker passivation film thickness and more positive pitting potential. In simulated seawater (3.5 % NaCl solution), the High entropy alloy AlNbTiZrSi x exhibited higher passive current density, because the Zr 5 Al 3 phase regions preferential corroded, and the addition of Si reduced passive film stability, which worsening corrosion resistance [ 25 ]. A High-entropy alloy film (∼3 μm) of VAlTiCrSi was prepared by using the DC magnetron sputtering with the (V–Al–Ti–Cr–Si) spliced targets.…”

Section: Introductionmentioning

confidence: 99%

Effects of oxygen concentration on the corrosion behavior of high entropy alloy AlCoCrFeNi in simulated deep sea

Wang,

Wen,

Xie

et al. 2024

Heliyon

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Corrosion behavior and passive film characteristics of AlNbTiZrSix high-entropy alloys in simulated seawater environment

Cited by 23 publications

References 91 publications

A Modern Approach to HEAs: From Structure to Properties and Potential Applications

A Modern Approach to HEAs: From Structure to Properties and Potential Applications

Coupling Effect of Disconnected Pores and Grain Morphology on the Corrosion Tolerance of Laser-Clad 316L Coating

Effects of oxygen concentration on the corrosion behavior of high entropy alloy AlCoCrFeNi in simulated deep sea

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