Effects of rare earth elements on the microstructure and wear properties of TiB2 reinforced aluminum matrix composite coatings: Experiments and first principles calculations

Zhang, Tingting; Feng, Kai; Li, Zhuguo; Kokawa, Hiroyuki

doi:10.1016/j.apsusc.2020.147051

Cited by 34 publications

(10 citation statements)

References 28 publications

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“…However, the excess Ce results in the decreases of refining effect and the reagglomeration of reinforcements, which may be because the over‐refined reinforcements give rise to a higher risk of collision and adsorption to reduce the surface energy. [ 13 ] Therefore, there is a trade‐off between the improvement and the Ce content.…”

Section: Resultsmentioning

confidence: 99%

“…[15] Second, the rare-earth Ce act as a surface-active element is easily adsorbed on the surfaces of the reinforcements, as shown in Figure 8, which reduces the interfacial energy and inhabit the growth of reinforcements. [13,17] Third, the rounded TiB 2 particles may be closely related to the uneven segregation of rare earth on the surface of the reinforcements. [18] The copper matrix grains are refined after adding Ce, as described in Section 3.1.3, which may be attributed to the dual effects of promoting heterogeneous nucleation and inhibiting grains growth (pinning effect) by refined reinforcements.…”

Section: Influence Mechanism For Reinforcements and Cu Matrixmentioning

confidence: 99%

“…Additionally, the effects of La, Sc, and Y on the TiB 2 size and morphology in TiB 2 /Al composites were studied. [ 13 ] It was found that Sc segregated on the surface of TiB 2 particles, which is believed to be inseparable from the refinement and rounding of TiB 2 , and finally improved the mechanical properties of composites. Similarly, our previous studies [ 14 ] have shown that the size, morphology, and distribution of TiB 2 particles and TiB whiskers in (TiB 2p + TiB w )/Cu composites were significantly influenced by adding La, Ce, and Y, respectively, and the effect of Ce is more prominent in the improvement of tensile strength.…”

Section: Introductionmentioning

confidence: 99%

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Microstructures and Properties of In Situ (TiB_2p+TiB_w)/Cu Composites with Different Ce Content

et al. 2022

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TiB 2p þ TiB w )/Cu composites are prepared by in situ reaction casting. The effect of Ce content on the microstructures, electrical conductivity, and tensile strength of (TiB 2p þ TiB w )/Cu composites are studied. The results show that the right amount of Ce can significantly refine the reinforcements and the copper matrix grains, and improve the morphology and distribution of the reinforcements. Correspondingly, the electrical conductivity and tensile strength of the composites also vary with the Ce contents, but the excess Ce can result in a deterioration of microstructures and properties, and the reasons are also discussed. Finally, a better comprehensive property (78.4 %IACS and 671 MPa) is obtained when the Ce content is 0.04 wt%, which is consistent with the microstructures.

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Section: Resultsmentioning

confidence: 99%

Section: Influence Mechanism For Reinforcements and Cu Matrixmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microstructures and Properties of In Situ (TiB_2p+TiB_w)/Cu Composites with Different Ce Content

et al. 2022

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“…The properties of MMCs are functions of a range of variables, including types of matrix/reinforcement phases, amounts and orientation of reinforcements in matrix, interfacial structures and so on. With the unique combination of excellent mechanical and ultra-high multi-functional properties, graphene reinforced MMCs have great promising in applications including aerospace, automotive manufacturing and electronics industry [151][152][153]. According to their unique properties, prospect applications are discussed below.…”

Section: Prospect Applicationsmentioning

confidence: 99%

Recent advances in 2D graphene reinforced metal matrix composites

Chen¹,

Zhou²

2021

Nanotechnology

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The unique combination of excellent mechanical and functional properties makes graphene an ideal component for high-performance ‘smart’ composites, which are sensitive to thermal, optical, electrical and mechanical excitations, hence being potential in application of a range of sensors. It has confirmed that the addition of graphene into metal matrix can significantly enhance the mechanical property and deliver surprising functional properties. Thus, graphene reinforced metal matrix composites (GMMCs) have long been regarded as potential prospects of nanotechnology applications. Recently, researchers mainly focused on: (i) solving the interfacial issues and realizing controllable alignment of graphene in metal matrix to achieve optimal performance; (ii) reasonable designing of the microstructures basing on usage requirement and then fabricating via efficient technique. Thus, it is necessary to figure out key roles of microstructure in fabrication process, mechanical and multi-functional properties. This review consists of four parts: (i) fabrication process. The fabrication processes are firstly divided into three kinds basing on the different bonding nature between graphene and metal matrix. (ii) Mechanical property. The microstructural characteristics of metal matrix accompanying by the incorporation of graphene and their vital effects on mechanical properties of GMMCs are systematically summarized. (iii) Functional property. The crucial effects of microstructure on electrical and thermal properties are summarized. (iv) Prospect applications and future challenges. Application and challenges basing on the research status are discussed to provide useful directions for future exploration in related fields. All these four parts are discussed with a focus on key role of microstructure characteristics, which is instructive for the microstructures design and fabrication process optimization during academic researches and potential commercial applications.

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“…To this end, the first-principles calculations, based on density functional theory (DFT), were frequently employed to elucidate the interfacial properties of metallic materials in atomistic scales; Particularly, the interfacial energy and mechanical strength were computed to predict and explain the interfacial stability and mechanical properties of multiphase materials. Recently, first-principles calculations have been successfully applied to study the interfaces of AMCs, such as TiB 2 /Al [26], TiC/Al [27], and Graphene/Al [28]. Therefore, it is desirable that the interfacial behaviors and mechanical properties of HEA-reinforced AMCs could be examed by the first-principles studies, providing guidelines for the design of HEA-reinforced AMCs with high performance.…”

Section: Introductionmentioning

confidence: 99%

The Design of Aluminum-Matrix Composites Reinforced with AlCoCrFeNi High-Entropy Alloy Nanoparticles by First-Principles Studies on the Properties of Interfaces

Liu

Zheng

2022

Nanomaterials

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The present work reports the interfacial behaviors and mechanical properties of AlCoCrFeNi high-entropy alloy (HEA) reinforced aluminum matrix composites (AMCs) based on first-principles calculations. It is found the stability of HEA-reinforced AMCs is strongly dependent on the local chemical compositions in the interfacial regions, i.e., those regions containing more Ni atoms (>25%) or fewer Al atoms (<20%) render more stable interfaces in the HEA-reinforced AMCs. It is calculated that the interfacial energy of Al(001)/Al20Co19Cr19Fe19Ni19(001) interfaces varies from −0.242 eV/Å2 to −0.192 eV/Å2, suggesting that the formation of interfaces at (100) atomic plane is energetically favorable. For those constituent alloy elements presented at the interfaces, Ni could stabilize the interface whereas Al tends to deteriorate the stability of interface. It is determined that although the HEA-reinforced AMCs have less yield strength compared to aluminum, their Young’s modulus is enhanced from 69 GPa for pure Al to 134 GPa. Meanwhile, the meaningful plasticity under tension could also be improved, which are related to the chemical compositions at the interfaces. The results presented in this work could facilitate the designs of compositions and interfacial behaviors of HEA-reinforced AMCs for structural applications.

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Effects of rare earth elements on the microstructure and wear properties of TiB2 reinforced aluminum matrix composite coatings: Experiments and first principles calculations

Cited by 34 publications

References 28 publications

Microstructures and Properties of In Situ (TiB_2p+TiB_w)/Cu Composites with Different Ce Content

Microstructures and Properties of In Situ (TiB_2p+TiB_w)/Cu Composites with Different Ce Content

Recent advances in 2D graphene reinforced metal matrix composites

The Design of Aluminum-Matrix Composites Reinforced with AlCoCrFeNi High-Entropy Alloy Nanoparticles by First-Principles Studies on the Properties of Interfaces

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Effects of rare earth elements on the microstructure and wear properties of TiB2 reinforced aluminum matrix composite coatings: Experiments and first principles calculations

Cited by 34 publications

References 28 publications

Microstructures and Properties of In Situ (TiB2p+TiBw)/Cu Composites with Different Ce Content

Microstructures and Properties of In Situ (TiB2p+TiBw)/Cu Composites with Different Ce Content

Recent advances in 2D graphene reinforced metal matrix composites

The Design of Aluminum-Matrix Composites Reinforced with AlCoCrFeNi High-Entropy Alloy Nanoparticles by First-Principles Studies on the Properties of Interfaces

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Product

Resources

About

Microstructures and Properties of In Situ (TiB_2p+TiB_w)/Cu Composites with Different Ce Content

Microstructures and Properties of In Situ (TiB_2p+TiB_w)/Cu Composites with Different Ce Content