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Microstructure and Mechanical Properties of TiB2/AlSi10Mg Composites Fabricated by Laser Metal Deposition: Microstructure and Mechanical Properties of TiB2/AlSi10Mg Composites Fabricated by Laser Metal Deposition: Gao, Li, Zhao, He, and Lin

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Title: Microstructure and Mechanical Properties of TiB2/AlSi10Mg Composites Fabricated by Laser Metal Deposition: Microstructure and Mechanical Properties of TiB2/AlSi10Mg Composites Fabricated by Laser Metal Deposition: Gao, Li, Zhao, He, and Lin
Authors: Gao, Zeming1 (AUTHOR) gaozmdlpu@163.com, Li, Desheng1 (AUTHOR) deshengli80@163.com, Zhao, Yuhui2 (AUTHOR) yhzhao@sia.cn, He, Chen2 (AUTHOR) gaozmauthor@163.com, Lin, Hai1 (AUTHOR) lhai@dlpu.edu.cn
Source: JOM: The Journal of The Minerals, Metals & Materials Society (TMS). Apr2025, Vol. 77 Issue 4, p2392-2404. 13p.
Subjects: Fretting corrosion, Dispersion strengthening, Strength of materials, Laser deposition, Metal microstructure
Abstract: In this study, TiB2/AlSi10Mg composites are fabricated by laser metal deposition (LMD), and the effects of TiB2 content on microstructure and mechanical properties during additive manufacturing are investigated. After LMD processing, as the content of TiB2 continues to increase, the TiB2 particles remain essentially in their original form, reducing the laser reflectivity and increasing melt temperature, which leads to a slight increase in grain size. The incorporation of TiB2 particles effectively hinders the movement of dislocations through the synergistic effects of Orowan strengthening, dispersion strengthening and thermal mismatch strengthening, enhancing the deformation resistance of the material. The experimental results showed that the properties of TiB2/AlSi10Mg composites were significantly improved compared to unreinforced AlSi10Mg. The best comprehensive performance of the composites was obtained when the TiB2 content was 6%, with tensile strength, yield strength, elongation and hardness of 230 MPa, 145 MPa, 7.59% and 97.33 HV, respectively, which were improved by 27.8%, 29.5%, 46.5% and 23.5%, respectively, compared with unreinforced AlSi10Mg. Additionally, wear performance has been greatly improved, with a notable shift in the mechanism from adhesive wear to abrasive wear. [ABSTRACT FROM AUTHOR]
Copyright of JOM: The Journal of The Minerals, Metals & Materials Society (TMS) is the property of Springer Nature 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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  Data: Microstructure and Mechanical Properties of TiB<subscript>2</subscript>/AlSi<subscript>10</subscript>Mg Composites Fabricated by Laser Metal Deposition: Microstructure and Mechanical Properties of TiB<subscript>2</subscript>/AlSi<subscript>10</subscript>Mg Composites Fabricated by Laser Metal Deposition: Gao, Li, Zhao, He, and Lin
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  Data: <searchLink fieldCode="JN" term="%22JOM%3A+The+Journal+of+The+Minerals%2C+Metals+%26+Materials+Society+%28TMS%29%22">JOM: The Journal of The Minerals, Metals & Materials Society (TMS)</searchLink>. Apr2025, Vol. 77 Issue 4, p2392-2404. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Fretting+corrosion%22">Fretting corrosion</searchLink><br /><searchLink fieldCode="DE" term="%22Dispersion+strengthening%22">Dispersion strengthening</searchLink><br /><searchLink fieldCode="DE" term="%22Strength+of+materials%22">Strength of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Laser+deposition%22">Laser deposition</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+microstructure%22">Metal microstructure</searchLink>
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  Label: Abstract
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  Data: In this study, TiB2/AlSi10Mg composites are fabricated by laser metal deposition (LMD), and the effects of TiB2 content on microstructure and mechanical properties during additive manufacturing are investigated. After LMD processing, as the content of TiB2 continues to increase, the TiB2 particles remain essentially in their original form, reducing the laser reflectivity and increasing melt temperature, which leads to a slight increase in grain size. The incorporation of TiB2 particles effectively hinders the movement of dislocations through the synergistic effects of Orowan strengthening, dispersion strengthening and thermal mismatch strengthening, enhancing the deformation resistance of the material. The experimental results showed that the properties of TiB2/AlSi10Mg composites were significantly improved compared to unreinforced AlSi10Mg. The best comprehensive performance of the composites was obtained when the TiB2 content was 6%, with tensile strength, yield strength, elongation and hardness of 230 MPa, 145 MPa, 7.59% and 97.33 HV, respectively, which were improved by 27.8%, 29.5%, 46.5% and 23.5%, respectively, compared with unreinforced AlSi10Mg. Additionally, wear performance has been greatly improved, with a notable shift in the mechanism from adhesive wear to abrasive wear. [ABSTRACT FROM AUTHOR]
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  Group: Ab
  Data: <i>Copyright of JOM: The Journal of The Minerals, Metals & Materials Society (TMS) is the property of Springer Nature 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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        Value: 10.1007/s11837-025-07171-y
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      – Code: eng
        Text: English
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        PageCount: 13
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      – SubjectFull: Fretting corrosion
        Type: general
      – SubjectFull: Dispersion strengthening
        Type: general
      – SubjectFull: Strength of materials
        Type: general
      – SubjectFull: Laser deposition
        Type: general
      – SubjectFull: Metal microstructure
        Type: general
    Titles:
      – TitleFull: Microstructure and Mechanical Properties of TiB2/AlSi10Mg Composites Fabricated by Laser Metal Deposition: Microstructure and Mechanical Properties of TiB2/AlSi10Mg Composites Fabricated by Laser Metal Deposition: Gao, Li, Zhao, He, and Lin
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            NameFull: Gao, Zeming
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            NameFull: Li, Desheng
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            NameFull: Zhao, Yuhui
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            NameFull: He, Chen
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              M: 04
              Text: Apr2025
              Type: published
              Y: 2025
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