Boron nitride nanotube reinforced titanium metal matrix composites with excellent high-temperature performance

Bhuiyan, Mahedi Hasan; Wang, Jiangting; Li, Lu Hua; Hodgson, Peter; Agarwal, Arvind; Qian, Ma; Chen, Ying

doi:10.1557/jmr.2017.345

Cited by 27 publications

(37 citation statements)

References 36 publications

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“…Across all engineering industries, the ever-growing quest for maximizing the efficiency of operations while minimizing the environmental footprint has become the primary goal. Reducing structural weight while maintaining mechanical performance presents a challenge to commonly found materials 4,6,9 . The exhaustive conditions attained in the automotive, aerospace and naval applications including high mechanical loadings, wear, elevated temperatures, and oxidizing settings have prompted the need for materials with properties exceeding those of currently used metals and alloys 2,5,6,10 .…”

Section: Demand For Lightweight and High Strength Structural Materialsmentioning

confidence: 99%

“…Reducing structural weight while maintaining mechanical performance presents a challenge to commonly found materials 4,6,9 . The exhaustive conditions attained in the automotive, aerospace and naval applications including high mechanical loadings, wear, elevated temperatures, and oxidizing settings have prompted the need for materials with properties exceeding those of currently used metals and alloys 2,5,6,10 . Titanium and its alloys possess excellent thermo-mechanical stability, corrosion resistance, and high specific strength 6,11 .…”

Section: Demand For Lightweight and High Strength Structural Materialsmentioning

confidence: 99%

“…The exhaustive conditions attained in the automotive, aerospace and naval applications including high mechanical loadings, wear, elevated temperatures, and oxidizing settings have prompted the need for materials with properties exceeding those of currently used metals and alloys 2,5,6,10 . Titanium and its alloys possess excellent thermo-mechanical stability, corrosion resistance, and high specific strength 6,11 . Yet, its mechanical performance does not meet the requirements in its entirety to present a solution to the design criteria.…”

Section: Demand For Lightweight and High Strength Structural Materialsmentioning

confidence: 99%

“…Technological advancements in MMCs have demonstrated their potential to substitute conventional metals and alloys by achieving materials with enhanced specific strengths, wear resistance, and the advantage of tailorable properties 1,12 . A limiting factor in the reinforcement of Titanium matrices lies in the high reactivity of the reinforcing particles with the metal during processing involving elevated temperatures 1,6 . Hence, it is important that the reinforcing nanoparticle possesses thermal and chemical stability to withstand the elevated processing temperatures used in Ti matrices.…”

Section: Demand For Lightweight and High Strength Structural Materialsmentioning

confidence: 99%

“…The main challenge revolving the reinforcement of higher melting point metal matrices such as Titanium lies in the survival of the reinforcing nanoparticles. The thermal stability of BNNTs to up to 900 o C in the air prove their potential to reinforce Titanium matrices [6][7][8] .…”

Section: Chapter I: Introductionmentioning

confidence: 99%

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Boron Nitride Nanotube–Reinforced Titanium Composite with Controlled Interfacial Reactions by Spark Plasma Sintering

Bustillos

Nautiyal

et al. 2020

Adv Eng Mater

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In this study, Boron Nitride Nanotube (BNNT) reinforced Titanium matrix composites are synthesized by Spark Plasma Sintering. Two main challenges directly affecting the mechanical performance of BNNT-metal matrix composites are addressed:(i) Homogenous dispersion of high surface energy BNNTs, and (ii) Controlling interfacial reactions at the metal/nanotube interface. High affinity of acetone with BNNTs and high energy ultrasonication induced the mechanical dispersion and stability of BNNTs in their dispersion. The sintering of Ti (99% relative density) was achieved at 50% less processing temperature than those used in conventional sintering to minimize interfacial reactions when reinforced with BNNTs. The reduction of temperatures in addition to the reduction (by 91%) in processing times was shown to control reaction phases. Bulk compressive yield strengths of Ti-BNNT sintered at low (750 o C) and high (950 o C) temperatures were improved by 21% and 50% respectively, as compared to Ti alloy without reinforcement. Twin boundaries, pinning of dislocations by BNNTs, and crack bridging were strengthening mechanisms identified in the composites. vi TABLE OF CONTENT CHAPTER

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Section: Demand For Lightweight and High Strength Structural Materialsmentioning

confidence: 99%

Section: Demand For Lightweight and High Strength Structural Materialsmentioning

confidence: 99%

Section: Demand For Lightweight and High Strength Structural Materialsmentioning

confidence: 99%

Section: Demand For Lightweight and High Strength Structural Materialsmentioning

confidence: 99%

Section: Chapter I: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Boron Nitride Nanotube–Reinforced Titanium Composite with Controlled Interfacial Reactions by Spark Plasma Sintering

Bustillos

Nautiyal

et al. 2020

Adv Eng Mater

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Effect of Heat Treatment on Microstructure Evolution and Mechanical Properties of 2.5 vol% TiBw/TA15 Composites with Different Deformation Statuses

Jiao

Chen

et al. 2018

Adv Eng Mater

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In this study, heat treatments of solution and aging are performed on 2.5 vol% TiBw/TA15 composites with different deformation statuses. The results indicate that the mechanical properties of the 2.5 vol% TiBw/TA15 composites are influenced by the microstructure, which is affected by the thermal processing and heat treatment history. The elongated α phase is obtained in the powder extrusion process followed by air cooling (EAC) and is then spheroidized in the rotary swaging process. After solution at 970 °C, the α phase is further spheroidized and partially transformed into the β phase at different degrees depending on the deformation status. After aging at 930 °C, the volume fraction of the equiaxial α phase increases significantly and the transformed β phase is decomposed into the clustered α + β laths at different degrees. Although experiencing the same post‐heat treatment, the influence of the deformation history affects the microstructure. After solution at 970 °C for 30 min and aging at 930 °C for 100 min, the EAC + RSAC sample exhibits an ultimate tensile strength of 1335 MPa and an elongation of 4.2%. Additionally, the fracture mechanism consists of the brittle fracture of the TiB whiskers and the ductile failure of the TA15 matrix.

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Ultralow Temperature Densification of a Titanium Alloy by Spark Plasma Sintering

et al. 2020

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Full densification of a Ti alloy (Ti6Al4V) is achieved at unprecedented low temperatures of 650 °C and 555 MPa by spark plasma sintering (SPS) without any sintering aid. The alloy demonstrates a globular equiaxed microstructure with comparable mechanical properties as that sintered at conventional high temperatures (950 °C, 60 MPa). In contrast with the diffusion‐driven sintering of the Ti alloy at conventional SPS conditions, the near‐full densification (99%) attained at low‐temperature/high‐pressure regimes is attributed to plastic deformation‐driven mass transport processes. Sintering pressures of 555 MPa result in a dislocation dense microstructure and the activation of compressive twins imparting lattice strains of up to 2.86 × 10−3, suggesting a 25% increase in lattice distortions as compared with those sintered at moderate pressures of 60 MPa. Depth‐sensing nanoscale indentation reveals the globular microstructure of the high‐pressure‐sintered alloy to retain its elastic modulus and hardness of 138 and 4.8 GPa, respectively, with <2% deviation from those sintered at conventional SPS temperatures. This energy‐efficient technique proposes an alternative to thermally exhaustive routines and presents an advantage for engineering titanium‐matrix composites with nanofillers and controlled reaction products by reducing processing temperatures by up to 300 °C.

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Boron nitride nanotube reinforced titanium metal matrix composites with excellent high-temperature performance

Abstract: Abstract

Cited by 27 publications

References 36 publications

Boron Nitride Nanotube–Reinforced Titanium Composite with Controlled Interfacial Reactions by Spark Plasma Sintering

Boron Nitride Nanotube–Reinforced Titanium Composite with Controlled Interfacial Reactions by Spark Plasma Sintering

Effect of Heat Treatment on Microstructure Evolution and Mechanical Properties of 2.5 vol% TiBw/TA15 Composites with Different Deformation Statuses

Ultralow Temperature Densification of a Titanium Alloy by Spark Plasma Sintering

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