The in-situ formation of Al3Ti reinforcing particulates in an Al-7wt%Si alloy and their effects on mechanical properties

Ma, Siming; Wang, Yongsheng; Wang, Xiaoming

doi:10.1016/j.jallcom.2019.04.064

Cited by 40 publications

(3 citation statements)

References 37 publications

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“…These patterns showcased a limited presence of tear ridges and cleavage face, implying the quasi-disintegration of the fractures surfaces. 20 At 195 °C, there was a pronounced increase in cleavage face in the fracture morphology observed post both CA and PMFA treatments. This augmentation in cleavage face corresponds to a reduction in the alloys' EL due to brittle fracture mode, as depicted in Figure 8(c)-(f).…”

Section: Mechanical Property and Fracture Analysis Of Age-treated Alloysmentioning

confidence: 88%

Magnetic field treatment effects on microstructure and properties of A356 aluminium alloy

Pan,

Zhou,

et al. 2024

Materials Science and Technology

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This study investigates the impact of pulsed magnetic fields (33 mT) under varying ageing temperatures (175, 185 and 195 °C) on α-Al grains, secondary phases and mechanical properties of A356 aluminium alloy. Results show that magnetic field ageing treatment can not only refines α-Al grains and promotes Si particle precipitation, but also improves the size and morphology of eutectic Si. The optimal α-Al grain refinement post-magnetic field treatment is observed at an ageing temperature of 195 °C. Meanwhile, the ultimate tensile strength and yield strength values were recorded at 345 and 283 MPa, respectively. The magnetic field ageing treatment exerts a dual influence: it accelerates atom diffusion, fostering the precipitation of reinforcing phases and simultaneously refines alloy grains, increasing the grain boundaries.

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Section: Mechanical Property and Fracture Analysis Of Age-treated Alloysmentioning

confidence: 88%

Magnetic field treatment effects on microstructure and properties of A356 aluminium alloy

Pan,

Zhou,

et al. 2024

Materials Science and Technology

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“…At present, an increasing number of studies focus on AMCs reinforced with in situ Al 3 Ti particles. Ma et al [22] fabricated 5 vol.% in situ Al 3 Ti reinforced Al-7 wt.% Si alloy matrix composites by casting, and the influences of in situ Al 3 Ti particles on the microstructure and mechanical properties of the composite were studied. The microstructure and mechanical properties of the Al-7Si/Al 3 Ti composite were then further improved by adding the Sr element.…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, both the strength and ductility of the Al-7Si/Al 3 Ti were improved. Gong et al [23] further investigated the tribological properties of the Al-7 wt.%Si alloy/5 vol.% in situ Al 3 Ti composites based on the studied results of Ma et al [22]. They found that the formation of Al 3 Ti and the refined microstructure by the addition of Sr in the Al-7Si-Sr/Al 3 Ti composite can significantly increase the hardness and reduce the stress concentration in the wear process.…”

Section: Introductionmentioning

confidence: 99%

In Situ Formation of Al3Ti and Its Effects on the Microstructure, Hardness and Tribological Properties of Al Matrix Composites with Various Ti Contents

Lin

Ren

et al. 2023

Crystals

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At present, Al matrix composites (AMCs) have drawn much attention owing to their light weight, high specific strength, high thermal conductivity, and superior excellent wear resistance, which endows them with great potential in the aerospace, automobile and military industries. In this study, AMCs with different Ti contents (0, 5 and 10 vol.%) were prepared by powder metallurgy. During the sintering, Al3Ti particles were in situ formed in the Al matrix. It was found that the Ti completely reacted with the Al matrix and formed fine in situ Al3Ti particles in Al-10Ti, while some large Ti-Al3Ti core-shell formed in Al-5Ti due to the incomplete reaction between the Ti and the Al matrix. Furthermore, the hardness of the composites was significantly improved by the in situ formed Al3Ti particles, reaching 143.3 HV in Al-5Ti and the highest value at 331.2 HV in Al-10Ti, respectively. The wear resistance of the composites is remarkably enhanced by Al3Ti particles compared to the unreinforced Al. Al-5Ti has the highest wear resistance among the samples. The wear resistance of the Al-10Ti composite becomes slightly deteriorated compared to Al-5Ti due to the brittle nature of Al3Ti, which leads to a three-body abrasive wear.

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Kinetics and Mechanisms of Reactions Involved in In-Situ Aluminum-Based Metal Matrix Composites Reinforced with TiB2: A Numerical Investigation

Ranjan,

Jha

2024

Springer Proceedings in Materials

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The in-situ formation of Al3Ti reinforcing particulates in an Al-7wt%Si alloy and their effects on mechanical properties

Cited by 40 publications

References 37 publications

Magnetic field treatment effects on microstructure and properties of A356 aluminium alloy

Magnetic field treatment effects on microstructure and properties of A356 aluminium alloy

In Situ Formation of Al3Ti and Its Effects on the Microstructure, Hardness and Tribological Properties of Al Matrix Composites with Various Ti Contents

Kinetics and Mechanisms of Reactions Involved in In-Situ Aluminum-Based Metal Matrix Composites Reinforced with TiB2: A Numerical Investigation

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