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The synergistic addition of Al, Ti, Mo and W to strengthen the equimolar CoCrFeNi high-entropy alloy via thermal-mechanical processing.

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Title: The synergistic addition of Al, Ti, Mo and W to strengthen the equimolar CoCrFeNi high-entropy alloy via thermal-mechanical processing.
Authors: Man, Jiale1 (AUTHOR), Wu, Baolin1,2 (AUTHOR) wubaolin@sau.edu.cn, Duan, Guosheng2 (AUTHOR), Zhang, Lu2 (AUTHOR), Wan, Gang2 (AUTHOR), Zhang, Li2 (AUTHOR), Zou, Naifu2 (AUTHOR), Liu, Yandong1 (AUTHOR)
Source: Journal of Alloys & Compounds. May2022, Vol. 902, pN.PAG-N.PAG. 1p.
Subjects: Solution strengthening, Tungsten alloys, Tensile strength, Alloys, Crystal grain boundaries
Abstract: • σ-TCP precipitates are favorable for improving the tensile property of equimolar CoCrFeNi-HEA. • nano γ′ phase is positive strengthening medium for equimolar CoCrFeNi-HEA. • W, Mo, Al and Ti play a synergistic role in strengthening the equimolar CoCrFeNi-HEA. • A promising combination of yield strength and elongation can be obtained via thermal-mechanical processing. The tensile mechanical properties and microstructures of the (CoCrFeNi) (100−x) (WMo) x and (CoCrFeNi) (100−x −6) (WMo) x (Al Ti) 6 (x = 1, 3, and 5) HEAs were investigated in the present work. The results showed that in addition to solid solution strengthening, grain boundary strengthening and dislocation strengthening, the equimolar CoCrFeNi-HEA doped with W and Mo was effectively strengthened by the precipitation of submicron topological close-packed phase (TCP) σ via thermal-mechanical processing. When Al (3 at%) and Ti (3 at%) added based on W and Mo additions, the alloys were further strengthened due to the formation of a heterogeneous microstructure containing the submicron σ phase, nano γ′ phase and micron (Ti, W, Mo)-rich phase. Tensile yield and ultimate strengths of the thermal-mechanical processed (CoCrFeNi) 91 (WMo) 3 (AlTi) 6 and (CoCrFeNi) 93 (WMo) 1 (AlTi) 6 HEAs can reach to 1576 MPa and 1216 MPa, respectively, combined with the correspondent elongations of 4.0% and 10.7%, respectively. The synergistic addition of W, Mo, Al and Ti is effective for improving the mechanical property of the equimolar CoCrFeNi-HEA. Ti easily causes the formation of (Ti, W, Mo)-rich phase that plays a role in enhancing the alloy. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Alloys & Compounds is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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  Label: Title
  Group: Ti
  Data: The synergistic addition of Al, Ti, Mo and W to strengthen the equimolar CoCrFeNi high-entropy alloy via thermal-mechanical processing.
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  Data: <searchLink fieldCode="AR" term="%22Man%2C+Jiale%22">Man, Jiale</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Baolin%22">Wu, Baolin</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> wubaolin@sau.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Duan%2C+Guosheng%22">Duan, Guosheng</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Lu%22">Zhang, Lu</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wan%2C+Gang%22">Wan, Gang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Li%22">Zhang, Li</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zou%2C+Naifu%22">Zou, Naifu</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Yandong%22">Liu, Yandong</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Alloys+%26+Compounds%22">Journal of Alloys & Compounds</searchLink>. May2022, Vol. 902, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Solution+strengthening%22">Solution strengthening</searchLink><br /><searchLink fieldCode="DE" term="%22Tungsten+alloys%22">Tungsten alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Tensile+strength%22">Tensile strength</searchLink><br /><searchLink fieldCode="DE" term="%22Alloys%22">Alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+grain+boundaries%22">Crystal grain boundaries</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • σ-TCP precipitates are favorable for improving the tensile property of equimolar CoCrFeNi-HEA. • nano γ′ phase is positive strengthening medium for equimolar CoCrFeNi-HEA. • W, Mo, Al and Ti play a synergistic role in strengthening the equimolar CoCrFeNi-HEA. • A promising combination of yield strength and elongation can be obtained via thermal-mechanical processing. The tensile mechanical properties and microstructures of the (CoCrFeNi) (100−x) (WMo) x and (CoCrFeNi) (100−x −6) (WMo) x (Al Ti) 6 (x = 1, 3, and 5) HEAs were investigated in the present work. The results showed that in addition to solid solution strengthening, grain boundary strengthening and dislocation strengthening, the equimolar CoCrFeNi-HEA doped with W and Mo was effectively strengthened by the precipitation of submicron topological close-packed phase (TCP) σ via thermal-mechanical processing. When Al (3 at%) and Ti (3 at%) added based on W and Mo additions, the alloys were further strengthened due to the formation of a heterogeneous microstructure containing the submicron σ phase, nano γ′ phase and micron (Ti, W, Mo)-rich phase. Tensile yield and ultimate strengths of the thermal-mechanical processed (CoCrFeNi) 91 (WMo) 3 (AlTi) 6 and (CoCrFeNi) 93 (WMo) 1 (AlTi) 6 HEAs can reach to 1576 MPa and 1216 MPa, respectively, combined with the correspondent elongations of 4.0% and 10.7%, respectively. The synergistic addition of W, Mo, Al and Ti is effective for improving the mechanical property of the equimolar CoCrFeNi-HEA. Ti easily causes the formation of (Ti, W, Mo)-rich phase that plays a role in enhancing the alloy. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Alloys & Compounds is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.jallcom.2022.163774
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Solution strengthening
        Type: general
      – SubjectFull: Tungsten alloys
        Type: general
      – SubjectFull: Tensile strength
        Type: general
      – SubjectFull: Alloys
        Type: general
      – SubjectFull: Crystal grain boundaries
        Type: general
    Titles:
      – TitleFull: The synergistic addition of Al, Ti, Mo and W to strengthen the equimolar CoCrFeNi high-entropy alloy via thermal-mechanical processing.
        Type: main
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            NameFull: Man, Jiale
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            NameFull: Wu, Baolin
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            NameFull: Duan, Guosheng
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            NameFull: Zhang, Lu
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            NameFull: Wan, Gang
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            – D: 05
              M: 05
              Text: May2022
              Type: published
              Y: 2022
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              Value: 09258388
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              Value: 902
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            – TitleFull: Journal of Alloys & Compounds
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