skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A Novel Low-Activation VCrFeTa xW x (x = 0.1, 0.2, 0.3, 0.4, and 1) High-Entropy Alloys with Excellent Heat-Softening Resistance

Abstract

The microstructure, Vickers hardness, and compressive properties of novel low-activation VCrFeTa xW x (x = 0.1, 0.2, 0.3, 0.4, and 1) high-entropy alloys (HEAs) were studied. The alloys were fabricated by vacuum-arc melting and the characteristics of these alloys were explored. The microstructures of all the alloys exhibited a typical morphology of dendritic and eutectic structures. The VCrFeTa 0.1W 0.1 and VCrFeTa 0.2W 0.2 alloys are essentially single phase, consisting of a disordered body-centered-cubic (BCC) phase, whereas the VCrFeTa 0.2W 0.2 alloy contains fine, nanoscale precipitates distributed in the BCC matrix. The lattice parameters and compositions of the identified phases were investigated. The alloys have Vickers hardness values ranging from 546 HV0.2 to 1135 HV0.2 with the x ranging from 0.1 to 1, respectively. The VCrFeTa 0.1W 0.1 and VCrFeTa 0.2W 0.2 alloys exhibit compressive yield strengths of 1341 MPa and 1742 MPa, with compressive plastic strains of 42.2% and 35.7%, respectively. VCrFeTa 0.1W 0.1 and VCrFeTa 0.2W 0.2 alloys have excellent hardness after annealing for 25 h at 600–1000 °C, and presented compressive yield strength exceeding 1000 MPa with excellent heat-softening resistance at 600–800 °C. By applying the HEA criteria, Ta and W additions into the VCrFeTaW are proposedmore » as a family of candidate materials for fusion reactors and high-temperature structural applications.« less

Authors:
 [1];  [2]; ORCiD logo [1]
  1. Univ. of Science and Technology Beijing (China)
  2. Univ. of Tennessee, Knoxville, TN (United States)
Publication Date:
Research Org.:
Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1614164
Grant/Contract Number:  
FE0011194
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Entropy
Additional Journal Information:
Journal Volume: 20; Journal Issue: 12; Journal ID: ISSN 1099-4300
Publisher:
MDPI
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Physics; low-activation high-entropy alloys (HEAs); high-temperature structural alloys; microstructures; compressive properties; heat-softening resistance

Citation Formats

Zhang, Weiran, Liaw, Peter, and Zhang, Yong. A Novel Low-Activation VCrFeTaxWx (x = 0.1, 0.2, 0.3, 0.4, and 1) High-Entropy Alloys with Excellent Heat-Softening Resistance. United States: N. p., 2018. Web. doi:10.3390/e20120951.
Zhang, Weiran, Liaw, Peter, & Zhang, Yong. A Novel Low-Activation VCrFeTaxWx (x = 0.1, 0.2, 0.3, 0.4, and 1) High-Entropy Alloys with Excellent Heat-Softening Resistance. United States. doi:10.3390/e20120951.
Zhang, Weiran, Liaw, Peter, and Zhang, Yong. Tue . "A Novel Low-Activation VCrFeTaxWx (x = 0.1, 0.2, 0.3, 0.4, and 1) High-Entropy Alloys with Excellent Heat-Softening Resistance". United States. doi:10.3390/e20120951. https://www.osti.gov/servlets/purl/1614164.
@article{osti_1614164,
title = {A Novel Low-Activation VCrFeTaxWx (x = 0.1, 0.2, 0.3, 0.4, and 1) High-Entropy Alloys with Excellent Heat-Softening Resistance},
author = {Zhang, Weiran and Liaw, Peter and Zhang, Yong},
abstractNote = {The microstructure, Vickers hardness, and compressive properties of novel low-activation VCrFeTaxWx (x = 0.1, 0.2, 0.3, 0.4, and 1) high-entropy alloys (HEAs) were studied. The alloys were fabricated by vacuum-arc melting and the characteristics of these alloys were explored. The microstructures of all the alloys exhibited a typical morphology of dendritic and eutectic structures. The VCrFeTa0.1W0.1 and VCrFeTa0.2W0.2 alloys are essentially single phase, consisting of a disordered body-centered-cubic (BCC) phase, whereas the VCrFeTa0.2W0.2 alloy contains fine, nanoscale precipitates distributed in the BCC matrix. The lattice parameters and compositions of the identified phases were investigated. The alloys have Vickers hardness values ranging from 546 HV0.2 to 1135 HV0.2 with the x ranging from 0.1 to 1, respectively. The VCrFeTa0.1W0.1 and VCrFeTa0.2W0.2 alloys exhibit compressive yield strengths of 1341 MPa and 1742 MPa, with compressive plastic strains of 42.2% and 35.7%, respectively. VCrFeTa0.1W0.1 and VCrFeTa0.2W0.2 alloys have excellent hardness after annealing for 25 h at 600–1000 °C, and presented compressive yield strength exceeding 1000 MPa with excellent heat-softening resistance at 600–800 °C. By applying the HEA criteria, Ta and W additions into the VCrFeTaW are proposed as a family of candidate materials for fusion reactors and high-temperature structural applications.},
doi = {10.3390/e20120951},
journal = {Entropy},
issn = {1099-4300},
number = 12,
volume = 20,
place = {United States},
year = {2018},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

Save / Share:

Works referenced in this record:

Stable nanocrystalline NbMoTaW high entropy alloy thin films with excellent mechanical and electrical properties
journal, January 2018


Fabrication of Tungsten & Tungsten Alloy and its High Heat Load Testing for Fusion Applications
journal, January 2016


A new type of (TiZrNbTaHf)N/MoN nanocomposite coating: Microstructure and properties depending on energy of incident ions
journal, August 2018


Effect of Mn and V on structure and mechanical properties of high-entropy alloys based on CoCrFeNi system
journal, April 2014


Materials challenges in nuclear energy
journal, February 2013


Mechanical properties of Nb25Mo25Ta25W25 and V20Nb20Mo20Ta20W20 refractory high entropy alloys
journal, May 2011


Microstructural development in equiatomic multicomponent alloys
journal, July 2004


Development of new generation reduced activation ferritic-martensitic steels for advanced fusion reactors
journal, September 2016


Refractory high-entropy alloys
journal, September 2010


Microstructures and mechanical properties of Ti NbMoTaW refractory high-entropy alloys
journal, January 2018


Phase-Transformation Ductilization of Brittle High-Entropy Alloys via Metastability Engineering
journal, June 2017


Enhanced mechanical properties of HfMoTaTiZr and HfMoNbTaTiZr refractory high-entropy alloys
journal, July 2015


Compositional variation effects on the microstructure and properties of a refractory high-entropy superalloy AlMo0.5NbTa0.5TiZr
journal, February 2018


Structure and mechanical properties of B2 ordered refractory AlNbTiVZr x (x = 0–1.5) high-entropy alloys
journal, September 2017

  • Yurchenko, N. Yu.; Stepanov, N. D.; Zherebtsov, S. V.
  • Materials Science and Engineering: A, Vol. 704
  • DOI: 10.1016/j.msea.2017.08.019

Thermal stability and grain boundary strengthening in ultrafine-grained CoCrFeNi high entropy alloy composite
journal, November 2017


Microstructure, mechanical and corrosion behaviors of AlCoCuFeNi-(Cr,Ti) high entropy alloys
journal, February 2017


Microstructures and properties of high-entropy alloys
journal, April 2014


Resistance of CoCrFeMnNi high-entropy alloy to gaseous hydrogen embrittlement
journal, July 2017


High-entropy high-hardness metal carbides discovered by entropy descriptors
journal, November 2018


Alloy design for intrinsically ductile refractory high-entropy alloys
journal, October 2016

  • Sheikh, Saad; Shafeie, Samrand; Hu, Qiang
  • Journal of Applied Physics, Vol. 120, Issue 16
  • DOI: 10.1063/1.4966659

High-Throughput Screening Solar-Thermal Conversion Films in a Pseudobinary (Cr, Fe, V)–(Ta, W) System
journal, October 2018


Phase stability and microstructures of high entropy alloys ion irradiated to high doses
journal, November 2016


Microstructure and mechanical properties of refractory MoNbHfZrTi high-entropy alloy
journal, September 2015


Precipitation-strengthened refractory Al 0.5 CrNbTi 2 V 0.5 high entropy alloy
journal, February 2017


Recent status and improvement of reduced-activation ferritic-martensitic steels for high-temperature service
journal, October 2016


Development status of CLAM steel for fusion application
journal, December 2014


A high-entropy V 35 Ti 35 Fe 15 Cr 10 Zr 5 alloy with excellent high-temperature strength
journal, May 2017


Materials selection for nuclear applications: Challenges and opportunities
journal, January 2018


Development of W-coating with functionally graded W/EUROFER-layers for protection of First-Wall materials
journal, March 2018


Ultrastrong ductile and stable high-entropy alloys at small scales
journal, July 2015

  • Zou, Yu; Ma, Huan; Spolenak, Ralph
  • Nature Communications, Vol. 6, Issue 1
  • DOI: 10.1038/ncomms8748

Effect of Al addition on mechanical properties and microstructure of refractory AlxHfNbTaTiZr alloys
journal, March 2015


Metastable high-entropy dual-phase alloys overcome the strength–ductility trade-off
journal, May 2016

  • Li, Zhiming; Pradeep, Konda Gokuldoss; Deng, Yun
  • Nature, Vol. 534, Issue 7606
  • DOI: 10.1038/nature17981

Prediction of high-entropy stabilized solid-solution in multi-component alloys
journal, February 2012


Recent Progress in High Entropy Alloy Research
journal, July 2017


Neutron irradiation effects on the microstructural development of tungsten and tungsten alloys
journal, April 2016


Microstructure and Compressive Properties of NbTiVTaAlx High Entropy Alloys
journal, January 2012


Effect of valence electron concentration on stability of fcc or bcc phase in high entropy alloys
journal, May 2011

  • Guo, Sheng; Ng, Chun; Lu, Jian
  • Journal of Applied Physics, Vol. 109, Issue 10
  • DOI: 10.1063/1.3587228

Effect of vanadium addition on the microstructure and properties of AlCoCrFeNi high entropy alloy
journal, May 2014


An assessment on the future development of high-entropy alloys: Summary from a recent workshop
journal, November 2015


Recent progress in research on tungsten materials for nuclear fusion applications in Europe
journal, January 2013


Irradiation Resistance in Al x CoCrFeNi High Entropy Alloys
journal, August 2015


Phase Composition of a CrMo0.5NbTa0.5TiZr High Entropy Alloy: Comparison of Experimental and Simulated Data
journal, September 2013

  • Senkov, Oleg; Zhang, Fan; Miller, Jonathan
  • Entropy, Vol. 15, Issue 12
  • DOI: 10.3390/e15093796

Fundamental deformation behavior in high-entropy alloys: An overview
journal, October 2017

  • Diao, H. Y.; Feng, R.; Dahmen, K. A.
  • Current Opinion in Solid State and Materials Science, Vol. 21, Issue 5
  • DOI: 10.1016/j.cossms.2017.08.003

Microstructure and Properties of Aluminum-Containing Refractory High-Entropy Alloys
journal, July 2014


A refractory Hf25Nb25Ti25Zr25 high-entropy alloy with excellent structural stability and tensile properties
journal, September 2014


Development and exploration of refractory high entropy alloys—A review
journal, June 2018

  • Senkov, Oleg N.; Miracle, Daniel B.; Chaput, Kevin J.
  • Journal of Materials Research, Vol. 33, Issue 19
  • DOI: 10.1557/jmr.2018.153

Laser additive synthesis of high entropy alloy coating on aluminum: Corrosion behavior
journal, March 2015


Polymorphism in a high-entropy alloy
journal, June 2017

  • Zhang, Fei; Wu, Yuan; Lou, Hongbo
  • Nature Communications, Vol. 8, Issue 1
  • DOI: 10.1038/ncomms15687

Materials research for fusion
journal, May 2016

  • Knaster, J.; Moeslang, A.; Muroga, T.
  • Nature Physics, Vol. 12, Issue 5
  • DOI: 10.1038/nphys3735

Nanocrystalline High-Entropy Alloys: A New Paradigm in High-Temperature Strength and Stability
journal, February 2017


Structural-disorder and its effect on mechanical properties in single-phase TaNbHfZr high-entropy alloy
journal, March 2016


Mechanical properties of low-density, refractory multi-principal element alloys of the Cr–Nb–Ti–V–Zr system
journal, March 2013


He behavior in Ni and Ni-based equiatomic solid solution alloy
journal, July 2018


Nanostructured High-Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes
journal, May 2004

  • Yeh, J.-W.; Chen, S.-K.; Lin, S.-J.
  • Advanced Engineering Materials, Vol. 6, Issue 5, p. 299-303
  • DOI: 10.1002/adem.200300567

Understanding phase stability of Al-Co-Cr-Fe-Ni high entropy alloys
journal, November 2016


A critical review of high entropy alloys and related concepts
journal, January 2017


Microstructure and properties of a refractory NbCrMo0.5Ta0.5TiZr alloy
journal, November 2011


High-entropy alloys: a critical assessment of their founding principles and future prospects
journal, April 2016


Solid-Solution Phase Formation Rules for Multi-component Alloys
journal, June 2008

  • Zhang, Y.; Zhou, Y. J.; Lin, J. P.
  • Advanced Engineering Materials, Vol. 10, Issue 6, p. 534-538
  • DOI: 10.1002/adem.200700240

Microstructures and mechanical properties of Co2MoxNi2VWx eutectic high entropy alloys
journal, November 2016


The microstructure and mechanical properties of Al-containing 9Cr ODS ferritic alloy
journal, November 2015


Phase Decomposition of a Single-Phase AlTiVNb High-Entropy Alloy after Severe Plastic Deformation and Annealing : Phase Decomposition of a Single-Phase AlTiVNb High-Entropy Alloy
journal, January 2017

  • Schuh, Benjamin; Völker, Bernhard; Maier-Kiener, Verena
  • Advanced Engineering Materials, Vol. 19, Issue 4
  • DOI: 10.1002/adem.201600674

Blanket/first wall challenges and required R&D on the pathway to DEMO
journal, November 2015


Low-density, refractory multi-principal element alloys of the Cr–Nb–Ti–V–Zr system: Microstructure and phase analysis
journal, March 2013


Microstructural stability and mechanical behavior of FeNiMnCr high entropy alloy under ion irradiation
journal, July 2016


Science and technology in high-entropy alloys
journal, January 2018