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Microstructure and Mechanical Properties of In situ Synthesized Dual-Phase TiB2+ZrB2 Particle-Reinforced Al–Cu Alloy.

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Title: Microstructure and Mechanical Properties of In situ Synthesized Dual-Phase TiB2+ZrB2 Particle-Reinforced Al–Cu Alloy.
Authors: Su, Junqi1,2 (AUTHOR), Jin, Yinling3 (AUTHOR), Li, Mingze1,2 (AUTHOR), Liu, Xinming1,2 (AUTHOR), Li, Guanglong1,2 (AUTHOR) quyingdong@163.com, Qu, Yingdong2,4 (AUTHOR) liguanglong1990@163.com
Source: International Journal of Metalcasting. Jul2026, Vol. 20 Issue 4, p2844-2858. 15p.
Subjects: Titanium diboride, Zirconium boride, Composite materials, Microstructure, Aluminum-copper alloys, Mechanical behavior of materials, Composite particles (Composite materials)
Abstract: In particulate-reinforced aluminum alloys, forming fine-sized and uniformly distributed reinforcing particles is crucial to the improvement of the microstructure and mechanical properties of composite materials. This study proposes an in situ preparation process for generating dual-phase TiB2+ZrB2 reinforcing particles for Al–5Cu alloys, aiming to reduce composition segregation, refine the alloy microstructure, and enhance mechanical properties. The effects of melt reaction time (10 min, 40 min, 70 min) and reaction temperature (750 °C, 800 °C, 850 °C) on in situ endogenic reactions are investigated. With the increase in reaction time and temperature, the amount of reinforcing particles generated increases, the grain is refined, and the properties of (TiB2+ZrB2)/Al–5Cu alloys are improved. For 3 wt.% (TiB2+ZrB2)/Al–5Cu alloy, the particles formed by reacting at 850 °C for 40 min are fine and uniform, without residual intermediate products, showing the best grain refinement effect. The average grain size is 51.3 μm, which is 61.4% smaller than that of Al–5Cu alloy. Due to the reinforcement of dual-phase TiB2+ZrB2 particles, the strength and toughness of the alloy are synchronously improved. The tensile strength and elongation are 436 MPa and 6.7%, respectively, which are 7.7% and 19.6% higher than those of Al–5Cu alloy. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Metalcasting 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.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 195284918
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Microstructure and Mechanical Properties of In situ Synthesized Dual-Phase TiB<subscript>2</subscript>+ZrB<subscript>2</subscript> Particle-Reinforced Al–Cu Alloy.
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Metalcasting%22">International Journal of Metalcasting</searchLink>. Jul2026, Vol. 20 Issue 4, p2844-2858. 15p.
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  Data: <searchLink fieldCode="DE" term="%22Titanium+diboride%22">Titanium diboride</searchLink><br /><searchLink fieldCode="DE" term="%22Zirconium+boride%22">Zirconium boride</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+materials%22">Composite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink><br /><searchLink fieldCode="DE" term="%22Aluminum-copper+alloys%22">Aluminum-copper alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+particles+%28Composite+materials%29%22">Composite particles (Composite materials)</searchLink>
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  Data: In particulate-reinforced aluminum alloys, forming fine-sized and uniformly distributed reinforcing particles is crucial to the improvement of the microstructure and mechanical properties of composite materials. This study proposes an in situ preparation process for generating dual-phase TiB2+ZrB2 reinforcing particles for Al–5Cu alloys, aiming to reduce composition segregation, refine the alloy microstructure, and enhance mechanical properties. The effects of melt reaction time (10 min, 40 min, 70 min) and reaction temperature (750 °C, 800 °C, 850 °C) on in situ endogenic reactions are investigated. With the increase in reaction time and temperature, the amount of reinforcing particles generated increases, the grain is refined, and the properties of (TiB2+ZrB2)/Al–5Cu alloys are improved. For 3 wt.% (TiB2+ZrB2)/Al–5Cu alloy, the particles formed by reacting at 850 °C for 40 min are fine and uniform, without residual intermediate products, showing the best grain refinement effect. The average grain size is 51.3 μm, which is 61.4% smaller than that of Al–5Cu alloy. Due to the reinforcement of dual-phase TiB2+ZrB2 particles, the strength and toughness of the alloy are synchronously improved. The tensile strength and elongation are 436 MPa and 6.7%, respectively, which are 7.7% and 19.6% higher than those of Al–5Cu alloy. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of International Journal of Metalcasting 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/s40962-025-01751-z
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        Text: English
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        PageCount: 15
        StartPage: 2844
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      – SubjectFull: Titanium diboride
        Type: general
      – SubjectFull: Zirconium boride
        Type: general
      – SubjectFull: Composite materials
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      – SubjectFull: Microstructure
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      – SubjectFull: Aluminum-copper alloys
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      – SubjectFull: Mechanical behavior of materials
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      – SubjectFull: Composite particles (Composite materials)
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      – TitleFull: Microstructure and Mechanical Properties of In situ Synthesized Dual-Phase TiB2+ZrB2 Particle-Reinforced Al–Cu Alloy.
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            NameFull: Su, Junqi
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            NameFull: Jin, Yinling
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            NameFull: Liu, Xinming
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            NameFull: Li, Guanglong
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            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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