High-performance titanium-based composite strengthened with in-situ network-distributed 3D reinforcements

Liu, Zhenqiang; Li, Ruitao; Wang, Yun; Xu, Zhenying; Tian, Lihui; Hu, Huanlong; Khor, Khiam Aik

doi:10.1016/j.msea.2020.140572

Cited by 24 publications

(6 citation statements)

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“…Two types of interfacial reaction products are shown in Figure 2c,e: nanowire and nanoparticle. They were determined to be TiB and TiB 2 , respectively (this has been confirmed in our past publication [ 25 ] ). Figure 2f shows the X‐ray diffractometry (XRD) results of TMCs.…”

Section: Figuresupporting

confidence: 66%

Tribology Properties of Titanium‐Based Metals Reinforced by BN Nanosheets

Huang

Kostyantyn

et al. 2021

Adv Eng Mater

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Herein, the tribology properties of titanium matrix composites (TMCs) are studied, which are formed by simply blending of aspherical Ti particles and BN nanosheets (BNNSs) using low‐energy ball milling and then spark plasma sintering. The mechanical properties of TMCs are characterized by nanoindentation tests, and their friction and wear properties are determined by ball‐on‐disc tests. The results show that the TMC with 0.1 vol% BNNSs (0.1‐TMC) content has the highest hardness and the ratio of hardness to elastic modulus (H/E). In addition, the lowest coefficient of friction (COF) and wear loss of 0.1‐TMC indicate the best tribological performance. Analysis of the worn morphology reveals that the pure Ti with the lowest H/E value presents several microcracks on the surface, implying the microcutting dominates wear process. The addition of BNNSs effectively inhibits the formation of microcracks, thus improves the tribological properties. However, as the content increase, the adhesion of BNNSs and Ti powder becomes worse, increasing the wear debris, leading to abrasive wear and adhesive wear and causing the even more severe wear. As a result, the COF and wear loss of 0.8‐TMC are the largest.

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Section: Figuresupporting

confidence: 66%

Tribology Properties of Titanium‐Based Metals Reinforced by BN Nanosheets

Huang

Kostyantyn

et al. 2021

Adv Eng Mater

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“…The composite particles with 0.8 vol% BNNSs resemble those with 0.2 vol% BNNSs. However, Figure 3 f indicates that excessive BNNSs result in agglomeration, which can cause poor interfacial bonding and adversely affect the mechanical properties of the composites [ 20 ]. The fact that BNNSs are unfolded onto Cu particles evenly indicates that the ball milling process is suitable.…”

Section: Resultsmentioning

confidence: 99%

“…The average COF value of CMCs increased with the increase in the BNNS content, and the COF value of 0.8-CMC is close to that of P-Cu. According to previous studies [ 20 , 30 ], excessive nanosheets may reduce the properties of the composites.…”

Section: Resultsmentioning

confidence: 99%

“…To explore the full reinforcing potential of BNNSs, their content in CMCs should be well-determined, as demonstrated by other researchers. Liu et al [ 20 ] has reported that 0.5 vol% BNNSs can effectively enhance the tensile strength and tensile elongation of titanium-based composites instead of 0.8 vol% BNNSs, as higher BNNS content results in agglomerated BNNSs and weakens the interface [ 21 ]. Similarly, Huang et al [ 22 ] reported that excessive BNNSs lead to agglomeration, weakening the interface.…”

Section: Introductionmentioning

confidence: 99%

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The Wear Performance of Cu-Based Composites Reinforced with Boron Nitride Nanosheets

Zhu

2022

Materials

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Copper matrix composites (CMCs) were prepared by blending Cu particles with boron nitride nanosheets (BNNSs) and then by consolidating the blended particles using spark plasma sintering (SPS). The relative density of the compacts was over 99%, and an intact interface was formed between Cu and the BNNSs. Within the range of the BNNS content studied, its introduction improved microhardness and wear resistance. With the introduction of 0.2 vol% BNNSs, the friction coefficient reduced from 0.15 to merely 0.07, and the wear resistance improved by over 100%. This makes the CMCs reinforced with BNNSs promising materials in applications such as bearings.

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“…The addition of secondary nanofillers to engineer titanium-based metal matrix composites is a viable approach to address this shortcoming. [6][7][8][9] Boron nitride nanotube (BNNT), a structural analog of carbon nanotube (CNT), has received attention as a promising reinforcement candidate to augment the mechanical properties of low-density metals. [10] BNNT is characterized by elastic modulus exceeding 1 TPa and tensile strength as high as 30 GPa.…”

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In Situ Investigation of Deformation Mechanisms Induced by Boron Nitride Nanotubes and Nanointerphases in Ti–6Al–4V Alloy

et al. 2022

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There is a need to augment the mechanical strength of titanium alloys to take advantage of their low mass density for structural applications. Herein, the reinforcement potential of boron nitride nanotube (BNNT), a high‐aspect‐ratio nanomaterial with exceptional strength and thermal stability, to engineer nanocomposites based on Ti–6Al–4 V alloy, is interrogated. The stress‐transfer behavior at the matrix/filler interface is programmed by tweaking the extent of chemical reactions during sintering. A twofold improvement in indentation resistance after integrating BNNTs in the alloy due to the crack bridging mechanism is reported. There is a further 50% enhancement in hardness and stiffness as the sintering temperature is raised from 750 to 950 °C. This improvement is attributed to the escalated formation of TiN and TiB phases due to matrix–nanotube interfacial reactions at elevated temperatures. A novel indentation‐based in situ trench testing technique is employed to study the subsurface deformation mechanisms activated in the bulk of the composite specimen. The ceramic interphases promote the indentation resistance by acting as crack deflectors in the microstructure, which promotes the dissipation of mechanical work. These insights can be applied to designing Ti‐BNNT microstructures with desired mechanical properties and deformation characteristics.

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High-performance titanium-based composite strengthened with in-situ network-distributed 3D reinforcements

Cited by 24 publications

References 50 publications

Tribology Properties of Titanium‐Based Metals Reinforced by BN Nanosheets

Tribology Properties of Titanium‐Based Metals Reinforced by BN Nanosheets

The Wear Performance of Cu-Based Composites Reinforced with Boron Nitride Nanosheets

In Situ Investigation of Deformation Mechanisms Induced by Boron Nitride Nanotubes and Nanointerphases in Ti–6Al–4V Alloy

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