Mechanical Properties and Phase Stability of WTaMoNbTi Refractory High-Entropy Alloy at Elevated Temperatures

Wan, Yixing; Mo, Jinyong; Wang, Xin; Zhang, Zhibin; Shen, Baolong; Liang, Xiubing

doi:10.1007/s40195-021-01263-9

Cited by 45 publications

(5 citation statements)

References 33 publications

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“…The flow stress behaviour of refractory high entropy alloys, especially the yield-drop like phenomena has been reported in some literatures [50,54,62,63]. In 2011, Senkov et al [49] studied the high temperature compression of Nb 25 Mo 25 Ta 25 W 25 and V 20 Nb 20 Mo 20 Ta 20 W 20 RHEAs at 600-1600 °C with a strain rate of 0.001 s À1 .…”

Section: Trend Of Scientific Publication On Hot Deformation Of Rheas ...mentioning

confidence: 97%

“…Similarly, by substituting Re with Nb and Ti, Wan et al [117] studied the high temperature compression properties of WTaMoNbTi RHEA at 1600 °C at a strain rate of 0.001 s À1 . The WTaMoNbTi RHEA showed a yield strength of 173 MPa and a peak strength of 218 MPa with plasticity above 25%.…”

Section: Yield Strength Of Rhea During Hot Deformationmentioning

confidence: 99%

“…The WTaMoNbTi RHEA showed a yield strength of 173 MPa and a peak strength of 218 MPa with plasticity above 25%. Wan et al [117] demonstrated that adding Ti to WTaMoNb RHEA improved its high temperature strength and plasticity. Furthermore, the addition of Ti increased the lattice constant, thereby intensify the effect of solid solution hardening.…”

Section: Yield Strength Of Rhea During Hot Deformationmentioning

confidence: 99%

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A comprehensive review on the deformation behavior of refractory high entropy alloys at elevated temperatures

et al. 2023

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Thermo-mechanical processing of refractory high entropy alloys (RHEAs) at high temperatures is very important. It is an effective method of modifying the microstructure, properties, and shaping into final components after casting. Using the Scopus database, 57 articles relating to the hot deformation of refractory high entropy alloys were extracted from 2011 to 2022. Despite the limited number of articles on hot deformation of RHEAs, it is important to find out if the dominant softening mechanisms reported in other metallic alloys are evident. This is the main impetus for this study since the hot deformation behavior has not been comprehensively studied. All the probable mechanisms influencing deformation in metallic alloys, such as work hardening, dynamic recrystallization, and dynamic recovery, have also been observed in RHEAs. The bulging phenomenon, serrated grain boundaries, and necklace-like structures reported in metallic alloys have also been detected in hot deformed RHEAs. Unsafe deformation behavior such as cracks that have been reported in metallic alloys, have also been observed in RHEAs. This review has provided a comprehensive study on the hot working processes of RHEAs and highlighted critical gaps for future research direction with some suggested limitations.

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Section: Trend Of Scientific Publication On Hot Deformation Of Rheas ...mentioning

confidence: 97%

Section: Yield Strength Of Rhea During Hot Deformationmentioning

confidence: 99%

Section: Yield Strength Of Rhea During Hot Deformationmentioning

confidence: 99%

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A comprehensive review on the deformation behavior of refractory high entropy alloys at elevated temperatures

et al. 2023

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“…And these are applied to heat-resistant materials of liquid rocket engine nozzle, nuclear reactor, and a high-temperature furnace. In addition, RHEAs containing more elements have excellent room temperature strength and hardness and have a broader range of applications [237][238][239]. It can be used as an excellent structural material and wear-resistant material at room temperature to be made into cutting tools, abrasive tools, etc.…”

Section: Prospects and Future Opportunitiesmentioning

confidence: 99%

Development and Property Tuning of Refractory High-Entropy Alloys: A Review

Hua

Xing

et al. 2022

Acta Metall. Sin. (Engl. Lett.)

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In the past decade, multi-principal element high-entropy alloys (referred to as high-entropy alloys, HEAs) are an emerging alloy material, which has been developed rapidly and has become a research hotspot in the field of metal materials. It breaks the alloy design concept of one or two principal elements in traditional alloys. It is composed of five or more principal elements, and the atomic percentage (at.%) of each element is greater than 5% but not more than 35%. The high-entropy effect caused by the increase of alloy principal elements makes the crystals easy form body-centered cubic or face-centered cubic structures, and may be accompanied by intergranular compounds and nanocrystals, to achieve solid solution strengthening, precipitation strengthening, and dispersion strengthening. The optimized design of alloy composition can make HEAs exhibit much better than traditional alloys such as high-strength steel, stainless steel, copper-nickel alloy, and nickel-based superalloy in terms of high strength, high hardness, high-temperature oxidation resistance, and corrosion resistance. At present, refractory high-entropy alloys (RHEAs) containing high-melting refractory metal elements have excellent room temperature and high-temperature properties, and their potential high-temperature application value has attracted widespread attention in the high-temperature field. This article reviews the research status and preparation methods of RHEAs and analyzes the microstructure in each system and then summarizes the various properties of RHEAs, including high strength, wear resistance, high-temperature oxidation resistance, corrosion resistance, etc., and the common property tuning methods of RHEAs are explained, and the existing main strengthening and toughening mechanisms of RHEAs are revealed. This knowledge will help the on-demand design of RHEAs, which is a crucial trend in future development. Finally, the development and application prospects of RHEAs are prospected to guide future research.

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“…High entropy alloys (HEAs) have been developed as a new concept of the metallic material designed by Yeh et al [1], which refer to the alloys containing complex compositions of multi-principal element constituents. Since then, numerous alloys with unique properties have been discovered and investigated [2][3][4][5][6][7][8][9][10]. For example, the FeCoNiCrMn HEA displays enhanced mechanical properties of tensile strength over 1280 MPa and fracture toughness value exceeding 200 MPa m 1/2 at cryogenic temperature [11]; He et al [2] reported that the (CoNi) 50 (TiZrHf) 50 HEA shows an extraordinary Elinvar effect between room temperature and 900 K, along with an superelastic limit of ~ 2%; and W-bearing HEAs exhibit an outstanding radiation resistance [6].…”

Section: Introductionmentioning

confidence: 99%

High Tensile Strength and Superelasticity of Directionally Solidified Ti30Ni30Fe10Hf10Nb20 Eutectic High Entropy Alloy

Zeng

Zhou

et al. 2022

Acta Metall. Sin. (Engl. Lett.)

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Superelasticity has been widely used in various fields. High elastic limit simultaneously with large superelasticity is urgent in the critical applications. In this study, we have employed the high entropy alloy (HEA) concept to develop a new TiHfNiFe-Nb eutectic HEA (EHEA) based on the TiNi-Nb eutectic alloy. The results show the directional catkin-like microstructure with the fiber eutectic in the center and the lamella eutectic in the outside form along the directional solidification direction when the growth rate is 60 mm/h. The corresponding specimens display the high strength of 1409 MPa and superelasticity of 3.1% in tension at room temperature, which is attributed to the synergetic effect of high entropy, preferred orientation, ordered body-centered cubic (B2) phase and disordered body-centered cubic phase in the eutectic structure. This work sheds light on designing the high-performance superelastic function materials with EHEAs.

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Mechanical Properties and Phase Stability of WTaMoNbTi Refractory High-Entropy Alloy at Elevated Temperatures

Cited by 45 publications

References 33 publications

A comprehensive review on the deformation behavior of refractory high entropy alloys at elevated temperatures

A comprehensive review on the deformation behavior of refractory high entropy alloys at elevated temperatures

Development and Property Tuning of Refractory High-Entropy Alloys: A Review

High Tensile Strength and Superelasticity of Directionally Solidified Ti30Ni30Fe10Hf10Nb20 Eutectic High Entropy Alloy

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