Mechanical property and microstructure of in-situ TiB/Ti composites via vacuum sintering and hot rolling

Zhou, Yang; Yang, Fang; Chen, Cunguang; Shao, Yanru; Lu, Boxin; Sui, Yanli; Guo, Zhimeng

doi:10.1016/j.jallcom.2022.165042

Cited by 33 publications

(5 citation statements)

References 64 publications

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“…This makes more grain boundaries which can stop the dislocations movement and make the material stronger in compression. The increase in strength can also be attributed to five factors: (1) the solid solution atoms acting as dislocation draggers during tests, (2) the strengthening effect brought by significant grain refinement, (3) the load transfer effect of reinforcements during compressive process, (4) the mismatch of coefficient of thermal expansion (CTE) between TiB and Ti matrix, and (5) the substructure hardening resulting from increased dislocation density [15].…”

Section: Compressive Strength and Hardnessmentioning

confidence: 99%

“…Due to its mechanical and thermal stability, as well as the fact that it creates the fewest residual stresses in composites, TiB 2 has recently been found to be the best reinforcement for titanium [14]. Consequently, one of the most wanted titanium matrix composites (TMC) materials is Ti/TiB composites [15]. Numerous studies have been conducted on TiB, not only for grain growth but also to impact α phase's nucleation by presenting a wider variety of potential nucleation sites [16,17].…”

Section: Introductionmentioning

confidence: 99%

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Powder Metallurgy Preparation and Characterization of Titanium-Titanium Diboride Composite Targeted for Dental Implant

Aljafery,

Fatalla,

Haider

2023

J. Compos. Sci.

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Due to the advantages over other metallic materials, such as superior corrosion resistance, excellent biocompatibility, and favorable mechanical properties, titanium, its alloys and related composites, are frequently utilized in biomedical applications, particularly in orthopedics and dentistry. This work focuses on developing novel titanium-titanium diboride (TiB2; ceramic material) composites for dental implants where TiB2 additions were estimated to be 9 wt.%. In a steel mold, Ti-TiB2 composites were fabricated using a powder metallurgy technique and sintered for five hours at 1200 °C. Microstructural and chemical properties were analyzed by energy dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and X-ray diffraction (XRD) to evaluate the impact of the TiB2 ceramic addition. Compressive strength, Brinell hardness, porosity, and density, among other mechanical and physical properties, were also measured and characterized. It has been found that adding TiB2 to Ti increases its porosity (35.53%), compressive strength (203.04 MPa), and surface hardness (296.3 kg/mm2) but decreases its density (3.79 gm/cm3). The lightweight and strong composite could be suitable for dental implant applications.

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Section: Compressive Strength and Hardnessmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Powder Metallurgy Preparation and Characterization of Titanium-Titanium Diboride Composite Targeted for Dental Implant

Aljafery,

Fatalla,

Haider

2023

J. Compos. Sci.

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“…To date, composite materials based on titanium borides are of great scientific and practical interest. These materials provide the highest specific strength and modulus of elasticity compared to steel and nickel alloys, while their density is significantly lower [1][2][3][4][5]. However, the requirements to the physical-mechanical and operational properties of composite materials are increasing every year due to their work in heavier and more loaded conditions.…”

Section: Introductionmentioning

confidence: 99%

Influence of Layer-Thickness Proportions and Their Strength and Elastic Properties on Stress Redistribution during Three-Point Bending of TiB/Ti-Based Two-Layer Ceramics Composites

Khvostunkov,

Bazhin,

et al. 2023

Metals

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A mathematical model was developed to determine the order of failure of layers in a two-layer ceramics composite and to determine the conditions for achieving the maximum limit load under three-point loading. The model was set in the space of three “bilayer parameters”: the ratio of the thickness of the lower layer to the whole thickness of the beam, the ratio of Young’s moduli of the lower layer to the upper layer, and the ratio of flexural strengths of the materials of the lower layer to the upper layer. The adequacy of the model obtained was confirmed by experimental results on the three-point bending of the experimental specimens. The experimental samples were two-layer composites consisting of a cermet layer TiB/Ti and a layer of α-Ti. The samples were obtained by free self-propagating high-temperature synthesis (SHS) compression and with varying their thickness. The results obtained make it possible to predict in advance which layer, based on the specific bilayer parameters, will trigger the brittle fracture mechanism as well as to set the maximum destructive load of bilayer composites.

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“…Titanium and its alloys have good comprehensive properties. Due to its high strength, low density and environmental friendliness, titanium is widely used in the aerospace, biomedical, and transportation fields [4][5][6]. Titanium matrix composites are a new material system prepared by adding reinforcements to the Ti matrix.…”

Section: Introductionmentioning

confidence: 99%

Study on the Preparation of Network Ti-N/Ti Composites by Nitridation of Ti Powders

Xiu

Zhan³

et al. 2023

Materials

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Composite structure design is an important way to improve reinforcement strengthening efficiency. The dispersion of the external reinforcement is often not uniform enough, however, and it is agglomerated in the matrix, which cannot uniformly and effectively bear the load. The interconnected reinforcement network prepared by the in-situ self-growth method is expected to obtain higher material properties. In this paper, the TiN shell was formed on the surface of Ti powder by the in-situ nitriding method, and then the network TiN/Ti composites were prepared by sintering. In the control group, TiN was dispersed by mechanical ball milling, and it was found that TiN powder was coated on the surface of Ti particles, and the sintered TiN/Ti composites formed a discontinuous structure with a great deal of TiN agglomeration. A uniform TiN nitride layer of 5~7 μm was formed on the surface of Ti powder by the in-situ nitriding method, and a connected TiN network was formed in the sintered Ti-N/Ti composites. The composites prepared by nitriding have higher compressive strength, hardness, and plasticity. The hardness of the Ti-N/Ti composite is 685.7 HV and the compressive strength is 1468.5 MPa. On this basis, the influence of the connected TiN structure on the material properties was analyzed, which provided theoretical guidance for the structural design of the network structure-reinforced titanium matrix composites.

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Mechanical property and microstructure of in-situ TiB/Ti composites via vacuum sintering and hot rolling

Cited by 33 publications

References 64 publications

Powder Metallurgy Preparation and Characterization of Titanium-Titanium Diboride Composite Targeted for Dental Implant

Powder Metallurgy Preparation and Characterization of Titanium-Titanium Diboride Composite Targeted for Dental Implant

Influence of Layer-Thickness Proportions and Their Strength and Elastic Properties on Stress Redistribution during Three-Point Bending of TiB/Ti-Based Two-Layer Ceramics Composites

Study on the Preparation of Network Ti-N/Ti Composites by Nitridation of Ti Powders

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