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High ductility in solution-treated Mg-Sc-Yb-Mn-Zr alloy mediated bydislocations.

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Title: High ductility in solution-treated Mg-Sc-Yb-Mn-Zr alloy mediated bydislocations.
Authors: Zhou, Tianshui1,2 (AUTHOR), Liu, Zehua1,2 (AUTHOR), Yang, Donglin1,2 (AUTHOR), Meng, Shuaiju1,2 (AUTHOR), Jia, Zhi1,2 (AUTHOR), Liu, Dexue1,2 (AUTHOR) dxliu@lut.cn
Source: Journal of Alloys & Compounds. Aug2021, Vol. 873, pN.PAG-N.PAG. 1p.
Subjects: Alloys, Ductility, Grain refinement, Tensile tests, Hypereutectic alloys, Grain size
Abstract: Due to their unique crystal structure, preparation of high-ductility Mg alloys is still a great challenge, especially high-ductility as-cast or heat-treated Mg alloys. Here, the effect of Sc on the microstructure, second phases, and mechanical properties of as-cast and heat-treated Mg-xSc-3Yb-1Mn-0.5Zr (x = 2, 3, 4, 6 wt%) alloys was investigated systematically. The results indicated that as-cast samples mainly consisted of α-Mg, MgSc, Mg 2 Yb, Mn 2 Zr and Mn 2 Sc phases. Moreover, the average grain sizes of all alloys clearly decreased with the addition of Sc. After solid-solution treatment at 525 °C for 12 h, the tensile elongation (El.) of Mg-xSc-3Yb-1Mn-0.5Zr (x = 2, 3, 4, 6 wt%) alloys improved and the 6 wt% Sc-containing solution-treated sample demonstrated the maximum El. of 28%. Examination of high-ductility solution-treated alloy microstructure revealed that dislocation slip was the primary deformation mechanism during tensile testing. In particular, the high ductility was primarily associated with the activation of profusedislocations, which can significantly accommodate c-axis strain to improve plasticity. Besides, both grain refinement and solid-solution strengthening were also responsible for the large El. of the Mg-6Sc-3Yb-1Mn-0.5Zr alloy. This work can provide useful insights into developing high-ductility Mg alloys using Sc alloying and solution treatment (T4). • A novel Mg-6Sc-3Yb-1Mn-0.5Zr alloy with high El. of 28% was fabricated by cast and solution treatment (T4). • The activation of profuse pyramidaldislocations is responsible for high ductility in Mg-6Sc-3Yb-1Mn-0.5Zr alloy. • Sc alloying is a simple strategy for developing high ductile Mg alloys without further deformation processing. [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.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 150227837
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PubTypeId: academicJournal
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  Data: High ductility in solution-treated Mg-Sc-Yb-Mn-Zr alloy mediated by<c + a>dislocations.
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  Data: <searchLink fieldCode="AR" term="%22Zhou%2C+Tianshui%22">Zhou, Tianshui</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Zehua%22">Liu, Zehua</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Donglin%22">Yang, Donglin</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Meng%2C+Shuaiju%22">Meng, Shuaiju</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jia%2C+Zhi%22">Jia, Zhi</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Dexue%22">Liu, Dexue</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> dxliu@lut.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Alloys+%26+Compounds%22">Journal of Alloys & Compounds</searchLink>. Aug2021, Vol. 873, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Alloys%22">Alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Ductility%22">Ductility</searchLink><br /><searchLink fieldCode="DE" term="%22Grain+refinement%22">Grain refinement</searchLink><br /><searchLink fieldCode="DE" term="%22Tensile+tests%22">Tensile tests</searchLink><br /><searchLink fieldCode="DE" term="%22Hypereutectic+alloys%22">Hypereutectic alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Grain+size%22">Grain size</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Due to their unique crystal structure, preparation of high-ductility Mg alloys is still a great challenge, especially high-ductility as-cast or heat-treated Mg alloys. Here, the effect of Sc on the microstructure, second phases, and mechanical properties of as-cast and heat-treated Mg-xSc-3Yb-1Mn-0.5Zr (x = 2, 3, 4, 6 wt%) alloys was investigated systematically. The results indicated that as-cast samples mainly consisted of α-Mg, MgSc, Mg 2 Yb, Mn 2 Zr and Mn 2 Sc phases. Moreover, the average grain sizes of all alloys clearly decreased with the addition of Sc. After solid-solution treatment at 525 °C for 12 h, the tensile elongation (El.) of Mg-xSc-3Yb-1Mn-0.5Zr (x = 2, 3, 4, 6 wt%) alloys improved and the 6 wt% Sc-containing solution-treated sample demonstrated the maximum El. of 28%. Examination of high-ductility solution-treated alloy microstructure revealed that dislocation slip was the primary deformation mechanism during tensile testing. In particular, the high ductility was primarily associated with the activation of profuse<c + a>dislocations, which can significantly accommodate c-axis strain to improve plasticity. Besides, both grain refinement and solid-solution strengthening were also responsible for the large El. of the Mg-6Sc-3Yb-1Mn-0.5Zr alloy. This work can provide useful insights into developing high-ductility Mg alloys using Sc alloying and solution treatment (T4). • A novel Mg-6Sc-3Yb-1Mn-0.5Zr alloy with high El. of 28% was fabricated by cast and solution treatment (T4). • The activation of profuse pyramidal<c + a>dislocations is responsible for high ductility in Mg-6Sc-3Yb-1Mn-0.5Zr alloy. • Sc alloying is a simple strategy for developing high ductile Mg alloys without further deformation processing. [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.2021.159880
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Alloys
        Type: general
      – SubjectFull: Ductility
        Type: general
      – SubjectFull: Grain refinement
        Type: general
      – SubjectFull: Tensile tests
        Type: general
      – SubjectFull: Hypereutectic alloys
        Type: general
      – SubjectFull: Grain size
        Type: general
    Titles:
      – TitleFull: High ductility in solution-treated Mg-Sc-Yb-Mn-Zr alloy mediated by<c + a>dislocations.
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            NameFull: Zhou, Tianshui
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            NameFull: Liu, Zehua
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            NameFull: Yang, Donglin
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            NameFull: Meng, Shuaiju
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            NameFull: Jia, Zhi
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            NameFull: Liu, Dexue
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          Dates:
            – D: 25
              M: 08
              Text: Aug2021
              Type: published
              Y: 2021
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              Value: 09258388
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              Value: 873
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            – TitleFull: Journal of Alloys & Compounds
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