☆ 4.6 Article

Oxidation Behaviour of Refractory (HfCo)(100-x)(NbMo)(x) High-Entropy Alloys with a bcc+B2 Structure

APPLIED SCIENCES-BASEL (2023)

Related references

Note: Only part of the references are listed.

Article Chemistry, Physical

The as-cast AlxCrTaTi refractory medium entropy alloys with good room- temperature mechanical properties and high-temperature oxidation resistance

Hongju Zhang et al.

Summary: This study systematically investigates the room-temperature mechanical properties and high-temperature oxidation resistance of AlxCrTaTi RMEAs. The results show that AlxCrTaTi RMEAs possess high yield strength and plasticity, and the Al0.25CrTaTi alloy exhibits good oxidation resistance at high temperature.

JOURNAL OF ALLOYS AND COMPOUNDS (2023)

Add to Collection

Article Materials Science, Multidisciplinary

Designing NbTiTa-Cr/Al refractory complex concentrated alloys with balanced strength-ductility-oxidation resistance properties: Insights into oxidation mechanisms

C. Y. Liu et al.

Summary: Two new single-phase RCCAs Nb40Ti40Ta10Cr10 (Cr10) and Nb45Ti30Ta15Al10 (Al10) were designed by alloying ductile NbTiTa RCCAs with low content of Cr or Al, showing excellent tensile strength-ductility combination and the best oxidation resistance at 800°C. Cr10 exhibits slower oxidation kinetics compared with Al10 due to the low Pilling-Bedworth ratio and the special alternative layer structure consisting of rutile and porous mixed oxides.

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS (2023)

Add to Collection

Article Materials Science, Multidisciplinary

Development of high strength high plasticity refractory high entropy alloy based on Mo element optimization and advanced forming process

Hang Zhang et al.

Summary: In this paper, three kinds of refractory high entropy alloys, M0, M10 and M20, were designed and formed by Laser powder bed melting (LPBF) technology. The effect of Mo content on the microstructure and mechanical properties of the three alloys was studied. The results showed that with the increase of Mo element content, the grain size of the alloy becomes smaller, the yield strength increases greatly, and the plasticity of the alloy decreases continuously. This research solves the matching problem between plasticity and strength of refractory high entropy alloys at room temperature, providing a foundation for their industrial application.

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS (2023)

Add to Collection

Article Chemistry, Physical

On the rate of microstructural degradation of Al-Ta-Ti-Zr refractory metal high entropy superalloys

T. E. Whitfield et al.

Summary: Refractory metal high entropy superalloys (RSA) are being developed for high temperature structural applications. However, recently the microstructures of several RSA have been shown to be unstable, precipitating potentially deleterious intermetallic phases during prolonged exposure at elevated temperatures.

JOURNAL OF ALLOYS AND COMPOUNDS (2023)

Add to Collection

Article Chemistry, Physical

Study on annealing treatment of NbMoTaTiNi high-entropy alloy with ultra-high strength disordered-ordered transition structure for additive manufacturing

Hang Zhang et al.

Summary: In this paper, an ultra-high-strength, fine-grained NbMoTaTiNi high-entropy alloy was formed by SLM. The alloy exhibited high compressive yield strength, ultimate strength, and tensile strength. After annealing at high temperatures, the alloy showed increased compressive plasticity and transformed into cellular crystals. The alloy's stability was enhanced, and its potential application in aerospace and nuclear energy fields was proposed.

JOURNAL OF ALLOYS AND COMPOUNDS (2023)

Add to Collection

Article Materials Science, Multidisciplinary

Outstanding specific yield strength of a refractory high-entropy composite at an ultrahigh temperature of 2273 K

Bo Sun et al.

Summary: This study investigated the mechanical properties and microstructural evolution of a W 20 Ta 30 Mo 20 C 30 (at.%) refractory high-entropy composite (RHEC). The RHEC exhibited outstanding yield strength at high temperatures and had a complex triple-phase structure. Microstructural investigations showed significant grain refinement after annealing and compression, with different deformation mechanisms identified for each phase. The high-content ceramic phases and structural metastability were found to contribute to the outstanding yield strength at ultrahigh temperatures.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2023)

Add to Collection

Article Materials Science, Multidisciplinary

An ultrastrong niobium alloy enabled by refractory carbide and eutectic structure

Yi Zhang et al.

Summary: A novel lightweight and thermally-stable Nb alloy has been designed by combining the notion of eutectics and refractory carbide, exhibiting high-temperature specific compressive strength and retained engineering plasticity higher than existing Nb alloys.

MATERIALS RESEARCH LETTERS (2023)

Add to Collection

Article Chemistry, Physical

Thermal stability and oxidation resistance of non-equimolar ratio AlTiVCrNb refractory high-entropy alloys

Tong Xu et al.

Summary: In this study, the thermal stability, oxidation resistance, and high-temperature mechanical properties of refractory high entropy alloys Ti75Al10V5Cr5Nb5, Ti67Al12V7Cr7Nb7 and Ti55Al15V10Cr10Nb10 were investigated. It was found that the alloys exhibited precipitation of a second phase and order-disorder transformation at high temperatures. The oxidation behavior showed that all three alloys formed rutile-structured oxides, with Ti67Al12V7Cr7Nb7 being less oxidation resistant due to the less stable Nb2O5 phase. The alloys also demonstrated improved mechanical properties at high temperatures, with the presence of intermetallic compound nanoparticles providing an Orowan strengthening effect by inhibiting dislocation movement.

INTERMETALLICS (2023)

Add to Collection

Article Materials Science, Multidisciplinary

Thermal stability of (HfCo)90(NbMo)10 and (HfCo)75(NbMo)25 refractory high entropy alloys with a bcc+B2 structure

E. Panina et al.

Summary: The effect of long-term annealing on the structure and mechanical properties of refractory high entropy alloys was investigated. Annealing did not result in the formation of additional phases, but led to the formation of nanoprecipitates and separate phases inside the initial phases. The alloys were significantly strengthened and showed potential for the development of high entropy alloys with a stable structure.

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS (2023)

Add to Collection

Article Materials Science, Multidisciplinary

Unique precipitations in a novel refractory Nb-Mo-Ti-Co high-entropy superalloy

N. Yurchenko et al.

Summary: This study introduces a new refractory high-entropy superalloy RHESA, which shows improved application prospects at high temperatures by balancing the mechanical properties of various nanoprecipitates. The emergence of multi-type nanoprecipitates in the RHESA enhances the room-temperature compressive ductility without compromising the material strength, addressing a major issue of low stability of B2 dispersoids in current RHESAs at temperatures above 700 degrees Celsius.

MATERIALS RESEARCH LETTERS (2022)

Add to Collection

Article Materials Science, Multidisciplinary

Oxidation behavior of the Ti38V15Nb23Hf24 refractory high-entropy alloy at elevated temperatures

Ouyang Di et al.

Summary: The oxidation behavior of Ti38V15Nb23Hf24 refractory high-entropy alloy in air was studied. Two types of oxidation behavior were observed. Below 1000?, a dense composite oxide scale formed on the surface, while above 1000?, internal oxidation occurred in the alloy matrix.

CORROSION SCIENCE (2022)

Add to Collection

Article Chemistry, Physical

High temperature oxidation resistance of W-containing high entropy alloys

Ahmad Ostovari Moghaddam et al.

Summary: This study compared the oxidation behavior of tungsten-containing high entropy alloys (HEAs) with medium entropy alloy (MEA) at high temperatures, and found that the oxidation resistance of tungsten-containing HEAs was poor. However, the W-Mo-Ta-Al-Cr HEA exhibited the best oxidation resistance among all the tungsten-containing alloys.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

Add to Collection

Article Chemistry, Physical

Mechanical properties of (HfCo)100-x(NbMo)x refractory high-entropy alloys with a dual-phase bcc-B2 structure

E. Panina et al.

Summary: This study investigates the structure and mechanical properties of refractory high-entropy alloys, showing that a dual-phase structure can enhance both strength and ductility while exhibiting a yield stress anomaly under certain conditions.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

Add to Collection

Article Materials Science, Multidisciplinary

Oxidation behaviour of eutectic refractory high-entropy alloys at 800-1000 °C

N. Yurchenko et al.

Summary: In this study, we investigated the oxidation behavior of refractory high-entropy alloys with different compositions. It was found that increasing the Al/Ti ratio reduced the mass gain but resulted in oxide scale spallation. The studied alloys demonstrated better oxidation resistance than the current high-entropy alloys at 800 degrees C. Analysis of the alloy with near-parabolic oxidation kinetics revealed the formation of an external oxide layer primarily composed of TiO2 and an internal reaction zone with O-rich products and TiN.

CORROSION SCIENCE (2022)

Add to Collection

Article Materials Science, Multidisciplinary

Microstructure, compression properties, and oxidation behavior of Hf-25Ta-5Me alloys (Me is Mo, Nb, W, 0.5Mo+0.5 W, Cr, or Zr)

O. N. Senkov et al.

Summary: Hf-Ta based alloys have potential for high-temperature structural applications, and their structural properties at lower temperatures are equally important. This study investigated the microstructure, phase composition, mechanical properties, and oxidation behavior of six Hf-25Ta-5Me alloys at temperatures below the eutectoid transformation.

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS (2022)

Add to Collection

Article Multidisciplinary Sciences

Metal-carbide eutectics with multiprincipal elements make superrefractory alloys

Qinqin Wei et al.

Summary: This study reports a strategy to achieve exceptional high-temperature microstructural stability and strength by introducing eutectic carbide in a refractory multiprincipal-element alloy (MPEA). The eutectic MPEA has outstanding high-temperature strength and alleviates room-temperature brittleness through microcrack tip blunting. This offers a new paradigm for the design of next-generation high-temperature materials.

SCIENCE ADVANCES (2022)

Add to Collection

Article Materials Science, Multidisciplinary

Component fluctuation and lattice distortion-controlled oxidation behavior of refractory complex concentrated alloys

Jingzhi He et al.

Summary: The oxidation behavior of Ti2ZrTax refractory complex concentrated alloys is influenced by compositional fluctuation and lattice distortion, resulting in the formation of various oxides and an increased oxidation rate. Spinodal decomposition and lattice distortion contribute to the preferential diffusion of oxygen atoms along the Zr-enriched region.

CORROSION SCIENCE (2022)

Add to Collection

Article Materials Science, Multidisciplinary

Elemental effects on the oxidation of refractory compositionally complex alloys

Kai-Chi Lo et al.

Summary: This study systematically investigates the effects of Al, Cr, Mo, Nb, Ta, Ti, V, and Zr elements on the oxidation of RCCAs. It is found that Al, Cr, and Ti can enhance the oxidation resistance of RCCAs, while Zr and V result in severe internal oxidation. Mo is effective in suppressing internal oxidation, but forms non-protective compounds. Ta is more beneficial for reducing the oxidation mass gain.

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS (2022)

Add to Collection

Article Materials Science, Multidisciplinary

Selective electron beam melting of WMoTaNbVFeCoCrNi refractory high-entropy alloy

Bang Xiao et al.

Summary: FeCoCrNi- and WMoTaNb-based alloys are two prevalent high-entropy alloy systems. Additive manufacturing is widely employed in forming these alloys due to its superiority of complex shape forming and flexible materials design, which can meet the diverse demands for refractory alloy.

MATERIALS CHARACTERIZATION (2022)

Add to Collection

Article Chemistry, Physical

An assessment of the thermal stability of refractory high entropy superalloys

Tamsin E. Whitfield et al.

Summary: The microstructural evolution of AlMoNbTaTiZr high entropy superalloys at high temperatures was studied, revealing that the initial microstructures were unstable and new intra-granular precipitates were formed.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

Add to Collection

Review Materials Science, Multidisciplinary

Current Status of Research on the Oxidation Behavior of Refractory High Entropy Alloys

Bronislava Gorr et al.

Summary: Refractory high entropy alloys (RHEA) are emerging as promising high-temperature materials for structural applications due to their attractive mechanical properties, but concerns have been raised about their oxidation behavior, with some exhibiting good protectiveness attributed to the formation of protective oxides.

ADVANCED ENGINEERING MATERIALS (2021)

Add to Collection

Article Materials Science, Multidisciplinary

High-strength NbMoTaX refractory high-entropy alloy with low stacking fault energy eutectic phase via laser additive manufacturing

Hang Zhang et al.

Summary: The newly developed NbMoTaTi0.5Ni0.5 HEA exhibits high room-temperature compressive strength of 2297 MPa and high-temperature compressive strength of 651 MPa. The addition of Ni and Ti suppresses crack formation, enhances formability of NbMoTa HEA, and improves formability by transforming microcracks due to grain boundaries with low stacking fault energy. This study serves as a guideline for developing refractory high-entropy alloys via additive manufacturing like selective laser melting.

MATERIALS & DESIGN (2021)

Add to Collection

Article Materials Science, Multidisciplinary

Refractory high entropy alloy with ductile intermetallic B2 matrix / hard bcc particles and exceptional strain hardening capacity

Nikita Yurchenko et al.

Summary: A new Nb30Mo30Hf20Co20 (at. %) refractory high entropy alloy with a B2 matrix and bcc particles was introduced in this study. The complex deformation behavior of the phases resulted in extraordinary high strain hardening capacity at 22-600 degrees C, surpassing other RHEAs, and providing new opportunities for developing high-performance alloys for high-temperature applications.

MATERIALIA (2021)

Add to Collection

Article Materials Science, Multidisciplinary

Enhanced oxidation resistance of (Mo95W5)85Ta10 (TiZr)5 refractory multi-principal element alloy up to 1300°C

Ranran Su et al.

Summary: This study explores a two-step coating process for an innovative refractory multi-principal element alloy, demonstrating enhanced oxidation resistance at high temperatures and stable operation at 10-20% higher temperatures without forced cooling. The coating, consisting of an aluminoborosilica glass layer and RMPEA-Si-B multilayered structure, effectively protects the substrate and maintains coating integrity through borides acting as a barrier layer.

ACTA MATERIALIA (2021)

Add to Collection

Article Materials Science, Multidisciplinary

Oxidation resistance properties of refractory high-entropy alloys with varied AlxCrTiMo content

Ruiyang Zhang et al.

Summary: The research on oxidation kinetics and oxide film formation of AlxCrTiMo alloys reveals that Al content promotes the formation of Al2O3, while the balance of volatilization rate of refractory elements and formation rate of oxidation protective layer determine the weight gain of the alloy. This emphasizes the importance of understanding the interplay between alloy composition, oxidation behavior, and protective layer formation in high-entropy alloys.

JOURNAL OF MATERIALS SCIENCE (2021)

Add to Collection

Article Materials Science, Multidisciplinary

A new strategy to intrinsically protect refractory metal based alloys at ultra high temperatures

Bronislava Gorr et al.

CORROSION SCIENCE (2020)

Add to Collection

Article Chemistry, Physical

Oxidation behaviour of a novel refractory high entropy alloy at elevated temperatures

Kai-Chi Lo et al.

INTERMETALLICS (2020)

Add to Collection

Article Chemistry, Physical

Combinatorial synthesis and analysis of AlxTayVz-Cr20Mo20Nb20Ti20Zr10 and Al10CrMoxNbTiZr10 refractory high-entropy alloys: Oxidation behavior

Owais Ahmed Waseem et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2020)

Add to Collection

Article Nanoscience & Nanotechnology

Structures and mechanical properties of Ti-Nb-Cr-V-Ni-Al refractory high entropy alloys

E. S. Panina et al.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (2020)

Add to Collection

Article Materials Science, Multidisciplinary

The effect of Al on the formation and stability of a BCC-B2 microstructure in a refractory metal high entropy superalloy system

T. E. Whitfield et al.

MATERIALIA (2020)

Add to Collection

Article Materials Science, Multidisciplinary

Alloying effect on the oxidation behavior of a ductile Al0.5Cr0.25Nb0.5Ta0.5Ti1.5 refractory high-entropy alloy

S. Sheikh et al.

MATERIALS TODAY ADVANCES (2020)

Add to Collection

Article Materials Science, Multidisciplinary

Phase stability and microstructure evolution in a ductile refractory high entropy alloy Al10Nb15Ta5Ti30Zr40

V Soni et al.

MATERIALIA (2020)

Add to Collection

Article Chemistry, Physical

Native oxidation resistance of Al20Nb30Ta10Ti30Zr10 refractory complex concentrated alloy (RCCA)

T. M. Butler et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2019)

Add to Collection

Article Materials Science, Multidisciplinary

Oxidation response of a vacuum arc melted NbZrTiCrAl refractory high entropy alloy at 800-1200 °C

Ping Zhang et al.

VACUUM (2019)

Add to Collection

Article Materials Science, Multidisciplinary

Oxidation Resistance of Ti-Al-Cr-Nb-Based High-Entropy Alloys in Air at 1073 K

Richard Gawel et al.

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2019)

Add to Collection

Article Multidisciplinary Sciences

An oxidation resistant refractory high entropy alloy protected by CrTaO4-based oxide

Kai-Chi Lo et al.

SCIENTIFIC REPORTS (2019)

Add to Collection

Article Materials Science, Multidisciplinary

On the oxidation mechanism of refractory high entropy alloys

Franz Mueller et al.

CORROSION SCIENCE (2019)

Add to Collection

Article Materials Science, Multidisciplinary

Effect of microalloying with silicon on high temperature oxidation resistance of novel refractory high-entropy alloy Ta-Mo-Cr-Ti-Al

Franz Mueller et al.

MATERIALS AT HIGH TEMPERATURES (2018)

Add to Collection

Article Materials Science, Multidisciplinary

Oxidation Behavior between 700 and 1300 degrees C of Refractory TiZrNbHfTa High-Entropy Alloys Containing Aluminum

Chia-Hsiu Chang et al.

ADVANCED ENGINEERING MATERIALS (2018)

Add to Collection

Article Chemistry, Physical

Microstructure, mechanical and thermal oxidation behavior of AlNbTiZr high entropy alloy

J. Jayaraj et al.

INTERMETALLICS (2018)

Add to Collection

Article Chemistry, Physical

Accelerated oxidation in ductile refractory high-entropy alloys

Saad Sheikh et al.

INTERMETALLICS (2018)

Add to Collection

Article Materials Science, Multidisciplinary

Phase stability as a function of temperature in a refractory high-entropy alloy

Vishal Soni et al.

JOURNAL OF MATERIALS RESEARCH (2018)

Add to Collection

Review Materials Science, Multidisciplinary

Development and exploration of refractory high entropy alloys-A review

Oleg N. Senkov et al.

JOURNAL OF MATERIALS RESEARCH (2018)

Add to Collection

Article Materials Science, Multidisciplinary

A combinatorial approach for the synthesis and analysis of AlxCryMozNbTiZr high-entropy alloys: Oxidation behavior

Owais Ahmed Waseem et al.

JOURNAL OF MATERIALS RESEARCH (2018)

Add to Collection

Article Chemistry, Physical

Oxidation Behavior of Refractory AlNbTiVZr0.25 High-Entropy Alloy

Nikita Yurchenko et al.

MATERIALS (2018)

Add to Collection

Article Chemistry, Physical

High temperature oxidation behaviors of equimolar NbTiZrV and NbTiZrCr refractory complex concentrated alloys (RCCAs)

T. M. Butler et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2017)

Add to Collection

Article Metallurgy & Metallurgical Engineering

High-Temperature Oxidation Behavior of Refractory High-Entropy Alloys: Effect of Alloy Composition

Bronislava Gorr et al.

OXIDATION OF METALS (2017)

Add to Collection

Article Chemistry, Physical

High temperature oxidation behavior of an equimolar refractory metal-based alloy 20Nb-20Mo-20Cr-20Ti-20Al with and without Si addition

B. Gorr et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2016)

Add to Collection

Article Chemistry, Physical

Phase equilibria, microstructure, and high temperature oxidation resistance of novel refractory high-entropy alloys

B. Gorr et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2015)

Add to Collection

Article Chemistry, Physical

Microstructure and oxidation behavior of new refractory high entropy alloys

C. M. Liu et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2014)

Add to Collection

© Peeref 2019-2024. All rights reserved.