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Journal articles on the topic 'Ti–TiB composites'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Zherebtsov, S., M. Ozerov, M. Klimova, D. Klimenko, V. Sokolovsky, and N. Stepanov. "Evolution of microstructure and mechanical properties of Ti-based metal-matrix composites during hot deformation." MATEC Web of Conferences 321 (2020): 12016. http://dx.doi.org/10.1051/matecconf/202032112016.

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Two Ti-based composites, viz. Ti/TiB and Ti-15Mo/TiB were produced by spark plasma sintering using a Ti-10wt.%TiB2 powder mixture at 1000°C or Ti-14.25(wt.)%Mo-5(wt.)%TiB2 powder mixture at 1400°C, respectively. Specimens of the metal-matrix composites (MMCs) were subjected to uniaxial compression in the temperature range from 500 to 1050°С to determine processing window. Processing maps for both MMCs were constructed and analyzed. Mechanical behavior and microstructure evolution of both MMCs during multiaxial forging (MAF) at 700°C and at a strain rate 10-3 s-1 were studied. The flow stress f

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2

Kurita, Hiroki, Katsuyoshi Kondoh, Junko Umeda, and Noriharu Yodoshi. "Tensile Fracture of TiB Whisker Reinforced Ti Alloy Matrix Composites." Materials Science Forum 941 (December 2018): 1961–65. http://dx.doi.org/10.4028/www.scientific.net/msf.941.1961.

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TiB whisker reinforced Ti alloy matrix (Ti–TiB) composites have attracted attention as the aerospace materials with their high specific mechanical properties for long time. However, strengthening mechanism of Ti–TiB composites has not been revealed because of the agglomeration and incomplete precipitation of TiB whiskers in the Ti alloy matrix yet. In this study, we addressed to fabricate fully-dense TiB whisker reinforced Ti-6Al-4V alloy matrix (Ti6Al4V–TiB) composites via powder metallurgical process, which have the microstructure to discuss their tensile properties with the theories for com

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3

Sahay, S. S., K. S. Ravichandran, R. Atri, B. Chen, and J. Rubin. "Evolution of microstructure and phases in in situ processed Ti–TiB composites containing high volume fractions of TiB whiskers." Journal of Materials Research 14, no. 11 (1999): 4214–23. http://dx.doi.org/10.1557/jmr.1999.0571.

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A series of titanium composites, with varying volume fractions of titanium monoboride (TiB) whiskers, were made by mixing various proportions of titanium (Ti) and titanium diboride (TiB2) powders followed by hot pressing. The phases present were identified by x-ray diffraction. Microstructural examination revealed three different types of TiB whisker morphologies: (i) long and needle-shaped TiB whiskers that are isolated and randomly oriented in the Ti matrix at relatively low volume fractions (0.3), (ii) colonies of refined and densely packed TiB whiskers from intermediatevolume (0.55) to hig

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4

Wang, Li Fen, Zhao Hui Zhang, Tie Jian Su, and Fu Chi Wang. "Microstructure and Mechanical Properties of TiB-Ti/Ti-6Al-4V Composites Fabricated by Spark Plasma Sintering." Applied Mechanics and Materials 782 (August 2015): 107–12. http://dx.doi.org/10.4028/www.scientific.net/amm.782.107.

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TiB-Ti/Ti-6Al-4V composites were fabricated by spark plasma sintering (SPS) technique under a pressure of 50MPa, with sintering temperature of 1300 °C and heating rate of 100 °C /min. The effect of the TiB content in TiB-Ti composite layer on microstructures and mechanical properties of the TiB-Ti/Ti-6Al-4V composites were investigated. The results indicate that as an advanced welding method, SPS technique provided the excellent welding combination of TiB-Ti and Ti-6Al-4V. The relatively excellent mechanical properties of the joints, including the relative density of 98.6%, micro-hardness of 1

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5

Zhou, Yu, Hai Bo Feng, and De Chang Jia. "In Situ TiB Reinforced Titanium Metal Matrix Composites Prepared by Spark Plasma Sintering." Materials Science Forum 502 (December 2005): 189–94. http://dx.doi.org/10.4028/www.scientific.net/msf.502.189.

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In situ synthesized TiB reinforced titanium matrix composites of Ti-B and Ti-TiB2 systems have been prepared by spark plasma sintering at 800-1200 °C under 20 MPa for 5 min. The effects of sintering temperature and reinforcement volume fraction on flexural strength, Young’s modulus and fracture toughness of the composites were investigated. The in situ synthesized TiB reinforcements are randomly and uniformly distributed in titanium matrix. The TiB whiskers are aligned along [010] direction, and the crystallographic planes of the TiB needles are always of the type (100), (101) and (10 1) . The

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6

Balaji, V. S., and S. Kumaran. "Microstructural Transformation of Titanium-Boron Carbide (B₄C) Powder Mixture during Spark Plasma Sintering." Applied Mechanics and Materials 764-765 (May 2015): 51–55. http://dx.doi.org/10.4028/www.scientific.net/amm.764-765.51.

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Present study investigates the microstructural evolution and in-situ formation of Ti/(TiB+TiC) composite. The sintered compacts are having near theoretical density. The relative density of Ti/(TiB+TiC) composites decreases with increasing TiB and TiC content.The phase evolutions of TiB and TiC according to the in-situ reactions are analyzed by X-Ray diffraction technique (XRD). Optical microscope (OM) and Energy dispersive spectroscope (EDS) observations of the Ti/(TiB+TiC) composites shows the presence of TiC and TiB reinforcements as equiaxed and needle like structures respectively.

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7

Ota, Akinori, Masahiro Yamazaki, and Hiroshi Izui. "Effects of Raw Powder Morphology and Size on Tensile Properties of SPS-Consolidated TiB/Ti Composites." Key Engineering Materials 520 (August 2012): 276–80. http://dx.doi.org/10.4028/www.scientific.net/kem.520.276.

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Titanium matrix composites (TMC) exhibit excellent specific strength and corrosion resistance. TiB whiskers can be formed in titanium by solid-state reaction between titanium and TiB2 powders. The formation of TiB whiskers results in the improvement of tensile strength, Young's modulus and Vickers hardness. In this study, TiB reinforced pulverized or gas atomized pure titaniums were fabricated by spark plasma sintering. We focus on the effects of the powder morphology and size on the tensile properties of TiB/Ti composites. We will investigate the sintering performance and microstructures of T

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8

Kurita, Hiroki, Shiori Suzuki, Shoichi Kikuchi, Noriharu Yodoshi, Sophie Gourdet, and Fumio Narita. "Strengthening Mechanism of Titanium Boride Whisker-Reinforced Ti-6Al-4V Alloy Matrix Composites with the TiB Orientation Perpendicular to the Loading Direction." Materials 12, no. 15 (2019): 2401. http://dx.doi.org/10.3390/ma12152401.

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We fabricated fully dense titanium boride (TiB) whisker-reinforced Ti-6Al-4V alloy matrix (Ti6Al4V-TiB) composites, with a homogeneous dispersion, a TiB orientation perpendicular to the loading direction (; two-dimensional random direction) and an intimate Ti/TiB interface without an intermediate interfacial layer in the Ti-6Al-4V alloy matrix, by spark plasma sintering. Microstructural analysis allows us to present the tensile properties of the Ti6Al4V-TiB composites with the theories for discontinuous fiber-reinforced composites. The Ti6Al4V-TiB 10 vol.% composite yielded a Young’s modulus o

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9

Zhang, You Feng, and Jun Li. "Microstructure and Wear Resistance of the Composite Coatings Fabricated on Titanium Alloys by Laser Cladding." Advanced Materials Research 139-141 (October 2010): 398–401. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.398.

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In situ reaction synthesized TiB reinforced titanium matrix composites were fabricated using rapid non-equilibrium synthesis techniques of laser cladding. TiB/Ti composite coating was treated on Ti-6Al-4V surface using Ti and B powder mixture by laser cladding. Microstructure and dry sliding wear behavior of the in situ synthesized TiB/Ti composite coatings were investigated by optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), energy-dispersive spectroscopy (EDS), hardness tester and friction and wear tester. The composite coatings consist of Ti, Ti

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10

Zhang, Di, Jun Qiang Lu, Wei Jie Lu, and Ji Ning Qin. "Study on In Situ Synthesized Titanium Matrix Composites." Materials Science Forum 561-565 (October 2007): 751–56. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.751.

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In the present work, titanium matrix composites reinforced with TiB, TiC, and Re2O3 (Nd2O3 or Y2O3) were fabricated via common casting and hot-forging technology utilizing the chemical reaction between Ti, B4C (or C), rare earth (Re) and B2O3 through homogeneously melting in a non-consumable vacuum arc remelting furnace. In this work, Nd and Y were chosen as rare earth (Re) added in the in situ reaction. The thermodynamics of in situ synthesis reactions was studied. The results of X-ray diffraction (XRD) proved that no other phases appeared except for TiB, TiC and Re2O3. The microstructures of

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11

Liu, Bao Xi, Lin Geng, Xiang Lin Dai, Fu Xing Yin, and Lu Jun Huang. "Multiple Toughening Mechanisms of Laminated Ti-TiBw/Ti Composites Fabricated by Diffusion Welding." Materials Science Forum 848 (March 2016): 196–201. http://dx.doi.org/10.4028/www.scientific.net/msf.848.196.

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Laminated Ti-TiBw/Ti composites behave a moderate loading capacity and high fracture ductility with non-castropic failure stage under three-point bending test. Fracture characteristics of laminated composites reveal many extrinsic toughening behaviors, such as, interfacial delamination, bucking and crack deflection, and the interfacial delamination is attributed to the weak bonding strength. Many strengthening and toughening mechanisms are presented in the TiBw/Ti composite layer, such as de-bonding effects of TiB whiskers, multi-fracture of TiB whiskers, crack trapping effect and crack bridgi

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12

Lu, Ji Fang, Zhao Hui Zhang, and Fu Chi Wang. "Microstructure Characteristics and Mechanical Properties of In Situ TiB/Ti Composites Prepared by Arc-Melting Technique." Advanced Materials Research 881-883 (January 2014): 867–71. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.867.

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In this paper, in situ TiB reinforced Ti-3Al, Ti-6Al and Ti-6Al-4V matrix composites were prepared by arc-melting technique utilizing the reaction between Ti and TiB2, and then forged in the α+β phase field. Phase identification was carried out via X-ray diffraction. Microstructure of the composites was studied by optical microscopy (OM) and scanning electron microscopy (SEM). Mechanical properties of the composites after forging were measured at various temperatures by tensile experiment. The results showed that Ti-6Al-4V-2TiB composite exhibits fine equiaxed matrix microstructure with a grai

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13

Zhang, You Feng, and Jun Li. "Microstructure of In Situ TiB Reinforced Titanium Matrix Composite Coatings by Laser Cladding with Different Pre-Placed Powder Thickness." Advanced Materials Research 239-242 (May 2011): 899–902. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.899.

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In situ reaction synthesized TiB reinforced titanium matrix composites were fabricated using rapid non-equilibrium synthesis techniques of laser cladding. Titanium matrix composite were laser cladding treated on Ti-6Al-4V using Ti and B powder mixture, and the designed weight fractions of B were 10 wt.% in the starting powder mixture. The composite coating mainly consists of α-Ti and TiB. The reinforcement TiB is dispersed homogeneously in the composite coating with pre-placed powder thickness of 0.5mm. The influence of pre-placed powder thickness on microstructure of laser cladding coatings w

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14

Zhang, Di, Zhi Feng Yang, Wei Jie Lu, and Dong Xu. "In Situ Synthesis of Hybrid-Reinforced Titanium Matrix Composites." Solid State Phenomena 127 (September 2007): 155–60. http://dx.doi.org/10.4028/www.scientific.net/ssp.127.155.

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Novel hybrid TiB, TiC and rare earth oxide (Re2O3) reinforced titanium matrix composites were in situ synthesized utilizing the reaction between Ti, B4C (or C), rare earth (Re) and B2O3 through homogeneously melting in a non-consumable vacuum arc remelting furnace. In this work, Nd and Y were chosen as rare earth (Re) added in the in situ reaction. The thermodynamics of in situ synthesis reaction was studied. The results of X-ray diffraction (XRD) proved that no other phases appeared except for TiB, TiC and Re2O3. The microstructures of the composites were examined by scanning electron microsc

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15

Chen, Yuong, Chang Jiang Zhang, Rahoma Hasan K.S, Fan Tao Kong, Shu Long Xiao, and Zhi Guang Liu. "Effect of Forging on Microstruture and Mechanical Properties of In Situ TiB_w/Ti Composite." Advanced Materials Research 311-313 (August 2011): 43–47. http://dx.doi.org/10.4028/www.scientific.net/amr.311-313.43.

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Ti-6Al-2.5Sn-4Zr-0.7Mo-0.3Si-0.3Y alloy matrix composite reinforced with 7%vol TiB whiskers was fabricated by Induction Skull Melting (ISM) technique and one-direction forged technology utilizing the reaction between titanium and TiB2. The microstructure, room temperature and high temperature mechanical properties have been presented and discussed. Microstructural analysis of the composites revealed that the microstructure was significantly refined and TiB whiskers were made to align the longitudinal direction after forging. It shows that the tensile strength and ductility of the composites ha

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16

Ma, Feng Cang, Ping Liu, Wei Li, Xin Kuan Liu, Xiao Hong Chen, and Di Zhang. "Mechanical Properties and Strengthening Mechanisms of In Situ (TiB+TiC)/Ti-1100 Composite at Elevated Temperature." Materials Science Forum 686 (June 2011): 727–32. http://dx.doi.org/10.4028/www.scientific.net/msf.686.727.

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In this paper, Ti-1100 composites reinforced with TiB+TiC ceramic particles were fabricated using in situ technologies. Mechanical properties of the composites with different volume fractions of TiB and TiC reinforcements were evaluated by tensile tests at 873K. The breakage of TiB was observed during the failure process of the composite. Strengthening efficiencies of the reinforcements for different composites were calculated. The strengthening mechanisms in this composite during tensile tests were discussed. It was suggested that the effect of the solution of C, which was produced in the pre

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17

HUANG, LUJUN, FUYAO YANG, YONGLIANG GUO, JIE ZHANG, and LIN GENG. "EFFECT OF SINTERING TEPMERATURE ON MICROSTRUCTURE OF Ti6Al4V MATRIX COMPOSITES." International Journal of Modern Physics B 23, no. 06n07 (2009): 1444–48. http://dx.doi.org/10.1142/s021797920906107x.

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( TiBw + TiCp )/ Ti 6 Al 4 V composites were fabricated by reactive hot-pressing at the temperature range of 800~1200°C using the starting materials of TiB 2, C and Ti 6 Al 4 V powders. The XRD results suggested that the reaction between C and Ti happened 900°C and above, while the reaction between TiB 2 and Ti happen at 1100°C and above. SEM results also suggested that the reaction between C and Ti was prior to that between TiB 2 and Ti . With the increase of the sintering temperature, the size of TiC particle and TiB whisker reinforcements increased gradually. The TiC particle was formed at

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18

Shen, Xiang Bo, Zhao Hui Zhang, Mao Sheng Cao, and Fu Chi Wang. "Efffect of Spark Plasma Sintering Temperature on Mechanical Properties of In Situ TiB/Ti Composites." Advanced Materials Research 881-883 (January 2014): 923–26. http://dx.doi.org/10.4028/www.scientific.net/amr.881-883.923.

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The in-situ synthesized TiB reinforced titanium matrix composites have been prepared by spark plasma sintering technique at 950–1250°C, using mixtures of 10wt% TiB2 and 90wt% Ti powders. The effects of the sintering temperature on the mechanical properties (Vickers microhardness, yield strength and Young`s modulus) of the composites were investigated. SEM was used to analyze the reaction process and the microstructure of the compacts synthesized at different sintering temperatures. The results indicated that the in situ synthesized TiB grow rapidly with increasing sintering temperature. The co

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19

Meng, Qing Chang, Hai Bo Feng, De Chang Jia, and Yu Zhou. "Young’s Modulus of In Situ TiB Whiskers in Ti Metal Matrix Composites." Key Engineering Materials 353-358 (September 2007): 365–68. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.365.

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The TiB/Ti metal matrix composites (MMCs) with different volume fractions of in situ TiB reinforcements were spark plasma sintered at 1000 °C with a pressure of 20 MPa for 5 minutes in vacuum. The in situ synthesized TiB is whisker shape with a hexagonal transverse section and distributes uniformly and randomly in the Ti matrix. The Young’s modulus of TiB was back-calculated from the elastic properties of the composites using the Halpin-Tsai model. The Young’s moduli of all the composites were found to increase with the increase of TiB volume fraction. The calculated value of TiB Young’s modul

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20

Liang, Jing, Xiao Meng Tan, Cheng Jin Wang, Sui Yuan Chen, Chang Sheng Liu, and Jin Cheng Qin. "Microstructure on Laser In Situ Deposit of TiB_x/TiC ReinforcedComposite Coatings." Materials Science Forum 849 (March 2016): 665–70. http://dx.doi.org/10.4028/www.scientific.net/msf.849.665.

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In situ synthesized TiBx/TiC reinforced composite coatings were prepared on Ti-6Al-4V substrate by laser in situ deposition using 10B4C-18TiNi-72Ti-6Al-4V (wt. %) powder blends as the feedstock materials. The microstructural analysis of the composites was performed using scanning electron microscope, and phase analysis was done with X-ray diffraction. The results showed that the composite coatings contained long needle TiB, irregular block TiB2 and disperse particles/dendrites TiC, the thick rod phase which was a inlay structure consisted of TiB2 and TiC. These composite reinforced phases were

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21

Xu, Rongjun, Bin Liu, Yong Liu, et al. "High Temperature Deformation Behavior of In-Situ Synthesized Titanium-Based Composite Reinforced with Ultra-Fine TiB Whiskers." Materials 11, no. 10 (2018): 1863. http://dx.doi.org/10.3390/ma11101863.

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A TiB/Ti-6Al-4V composite reinforced with ultra-fine TiB whiskers (UF-TiB) was prepared by the powder metallurgy method. High temperature compression tests were carried out to study the hot deformation behavior of the UF-TiB/Ti-6Al-4V composite. The compressive deformation was performed in the temperature range of 900–1200 °C and the strain rate range of 0.001–10 s−1. The results showed that stable flow occurred at the condition of 900–1200 °C/0.001–0.01 s−1. The optimum working condition was 900 °C/0.001 s−1, with the deformation mechanism of dynamic recrystallization (DRX). Instable flow occ

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22

Wang, Wei Fu. "Nanoparticulate-Reinforced Ti-Base Composites Prepared by Laser Cladding." Advanced Materials Research 497 (April 2012): 311–14. http://dx.doi.org/10.4028/www.scientific.net/amr.497.311.

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With preplaced Ti-8Al-1Mo-1V + BN powder mixtures, the Ti-base composite coatings with in-suit synthesis nano particulates were obtained by laser cladding on titanium alloy substrate. The microstructures, fracture morphology, phase composition and mechanical property were studied by SEM, XRD and micro-hardness tests. The results show that, there are two kinds of typical nano particulates in the composites, i.e. the TiB with a diameter of ~400nm and the Ti2N with a diameter of ~10 nm. Both the TiB and Ti2N reinforced particulates are uniformly distributed in the composites. As a result, the ave

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23

Ropars, Ludovic, Moukrane Dehmas, Elisabeth Aeby-Gautier, David Tricker, Dominique Schuster, and Sophie Gourdet. "Effect of Processing Route on Microstructure and Mechanical Properties of a Ti-3Al-2.5V/TiB Composite." Materials Science Forum 941 (December 2018): 1950–55. http://dx.doi.org/10.4028/www.scientific.net/msf.941.1950.

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A Ti-3Al-2.5V matrix composite reinforced with 8.5 vol.% TiB was produced using a powder metallurgy route. Processing included the mechanical alloying of Ti-3Al-2.5V and TiB2 powders and Hot Isostatic Pressing (HIP) of the resultant composite powders, to produce a dense billet. These billets were subsequently extruded and/or subjected to various Conversion Heat Treatments (CHT), to complete the transformation of the TiB2 particles into TiB needles. The CHT was performed either before or after extrusion. Microstructures and tensile properties of the materials at each stage of the processing rou

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24

Zhang, Jinyong, Zhangfan, Wenxuan Ke, and Zhengyi Fu. "Growth of TiB Whisker in In-Situ Fabricating TiB/Ti Composites." Science of Advanced Materials 10, no. 1 (2018): 66–69. http://dx.doi.org/10.1166/sam.2018.2853.

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Hou, Jiabin, Lin Gao, Guorong Cui, Wenzhen Chen, Wencong Zhang, and Wenguang Tian. "Grain Refinement of Ti-15Mo-3Al-2.7Nb-0.2Si Alloy with the Rotation of TiB Whiskers by Powder Metallurgy and Canned Hot Extrusion." Metals 10, no. 1 (2020): 126. http://dx.doi.org/10.3390/met10010126.

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In situ synthesized TiB whiskers (TiBw) reinforced Ti-15Mo-3Al-2.7Nb-0.2Si alloys were successfully manufactured by pre-sintering and canned hot extrusion via adding TiB2 powders. During pre-sintering, most TiB2 were reacted with Ti atoms to produce TiB. During extrusion, the continuous dynamic recrystallization (CDRX) of β grains was promoted with the rotation of TiBw, and CDRXed grains were strongly inhibited by TiBw with hindering dislocation motion. Eventually, the grain sizes of composites decreased obviously. Furthermore, the stress transmitted from the matrix to TiBw for strengthening i

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Zhou, Yu, Hai Bo Feng, De Chang Jia, and Qing Chang Meng. "Stacking Faults and Growth Mechanism of In Situ TiB Whiskers and Interface Structures in SPSed TiB/Ti(FeMo) Composites." Materials Science Forum 539-543 (March 2007): 936–41. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.936.

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In situ TiB whiskers reinforced Ti metal matrix composites have been fabricated by spark plasma sintering (SPS). Microstructure and stacking faults of in situ TiB whiskers in the composites were investigated in detailed by means of scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high-resolution electron microscopy (HREM). The TiB whiskers exhibit a hexagonal shape at the transverse section and grow along the [010]TiB direction. The crystallographic planes of the TiB whiskers at transverse section are always of the (100), (101) and (10 1 ) planes. The interfaces b

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Kikuchi, Shoichi, Shunsuke Tamai, Takao Kawai, Yoshikazu Nakai, Hiroki Kurita, and Sophie Gourdet. "Effect of TiB Orientation on Near-Threshold Fatigue Crack Propagation in TiB-Reinforced Ti-3Al-2.5V Matrix Composites Treated with Heat Extrusion." Materials 12, no. 22 (2019): 3685. http://dx.doi.org/10.3390/ma12223685.

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TiB-reinforced Ti-3Al-2.5V matrix composites, in which TiB whiskers are oriented parallel to the direction of heat extrusion, were fabricated via mechanical alloying and hot isostatic pressing (HIP). To investigate the near-threshold fatigue crack propagation in TiB-reinforced Ti-3Al-2.5V matrix composites, stress intensity factor K-decreasing tests were conducted for disk-shaped compact specimens having two different orientations of TiB whiskers at force ratios from 0.1 to 0.8 under ambient conditions. The crack growth rates, da/dN, for the composites incorporating TiB whiskers oriented perpe

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Radhakrishna Bhat, B. V., J. Subramanyam, and V. V. Bhanu Prasad. "Preparation of Ti-TiB-TiC & Ti-TiB composites by in-situ reaction hot pressing." Materials Science and Engineering: A 325, no. 1-2 (2002): 126–30. http://dx.doi.org/10.1016/s0921-5093(01)01412-5.

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Jung, Taek Kyun, Sung Chul Lim, Hyouk Chon Kwon, and Mok Soon Kim. "Fabrication and Properties of TiB₂ Reinforced Cu Composites by Electromagnetic Stirring." Materials Science Forum 449-452 (March 2004): 297–300. http://dx.doi.org/10.4028/www.scientific.net/msf.449-452.297.

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Cu-Ti and Cu-B alloys were separately cast in vacuum arc melting furnace for alloying. These alloys were added to the copper melt of 1500K in the induction furnace and performed electromagnetic stirring at 1000rpm. The cast ingot(dia : 70mm, length : 100mm) was hot extruded with the extrusion ratio of 13:1 after heating at 1073K for 1 hour. The TiB 2 precipitates were observed in the extruded materials and the mean size of TiB 2 precipitates was found to be about 1.5µm. The volume fraction of TiB 2 varies due to the density difference between the TiB2 and the copper melt. With the increasing o

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Han, Yuanfei, Xianglong Sun, Pinwang Liu, Guangfa Huang, Lv Xiao, and Weijie Lu. "Deformation and fracture behavior of in-situ Ti composites reinforced with TiB/nano-sized particles." MATEC Web of Conferences 321 (2020): 08004. http://dx.doi.org/10.1051/matecconf/202032108004.

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The hot deformation and fracture behavior of TiB/nano-sized particulate reinforced titanium matrix composites were investigated. The effect of reinforcement contents and initial structures on the isothermal deformation and fracture characteristic were investigated through microstructure analysis, tensile tests and crack propagation tests. It was found that the optimal working parameters for Ti composites is determined at 900-950°C/0.01-0.1 s-1, which is associated with the continuous dynamic recrystallization of primary a grains and dynamic globularization of lamellar α. The necklace recrystal

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Mak, Jonathon, Richard Wuhrer, Greg Heness, et al. "Microstructural Analysis on Ti-6Al-4V and 10 Vol.% (TiB+TiC)/Ti-6Al-4V Metal Matrix Composites." Advanced Materials Research 32 (February 2008): 115–18. http://dx.doi.org/10.4028/www.scientific.net/amr.32.115.

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Particulate reinforced Ti based metal matrix composites (MMCs) were made by in-situ synthesis using vacuum arc re-melting process. The microstructure of the Ti-6Al-4V base alloy and 10 vol.% (TiB+TiC)/Ti-6Al-4V metal matrix composites was examined. The particulate reinforcements were analysed and identified TiB and TiC particles. The particle distribution was analysed using the quadrat method over 1620 quadrats. A homogeneous particle distribution was found to establish in the composites. The experimental distribution of the reinforcements agreed well with the theoretical Poisson distribution.

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Hagiwara, Masuo, and Satoshi Emura. "Blended Elemental P/M Synthesis of Titanium Alloys and Titanium Alloy-Based Particulate Composites." Materials Science Forum 534-536 (January 2007): 777–80. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.777.

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Titanium alloys and Titanium alloy-based particulate composites were synthesized using the blended elemental P/M route. First, processing conditions such as the fabrication of master alloy powder were investigated. Ti-6Al-4V, Ti-5Al-2.5Fe, Ti-6Al-2Sn-4Zr-2Mo, IMI685, IMI829, Timetal 1100 and Timetal 62S, and Ti-6Al-2Sn-4Zr-2Mo/10%TiB and Timetal 62S/10%TiB were then synthesized using the optimal processing conditions obtained. The microstructures and mechanical properties such as tensile strength and high cycle fatigue strength were evaluated.

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Emura, Satoshi, and Masuo Hagiwara. "Effect of Heat Treatment on the Creep Properties of Ti-22Al-27Nb/TiB Composite." Key Engineering Materials 345-346 (August 2007): 545–48. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.545.

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A TiB particulate-reinforced Ti-22Al-27Nb (mol%) alloy, based on the orthorhombic intermetallic phase, was prepared using gas atomization powder metallurgy method. In the as-atomized condition, extremely fine TiB particulates of less than 1-μm diameter and 5-μm length were dispersed in the matrix. After annealing heat treatment (heat treated at 1423 K with subsequent furnace cooling), this composite exhibited a lamellar matrix microstructure and showed better creep properties than a composite produced using conventional ingot metallurgy method, with coarse TiB particulates of 5-μm diameter and

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34

Endo, Kumi, Jun-ichi MATSUSHITA, Kenshi KAWABATA, Eiichi SATO, and Kazuhiko KURIBAYASHI. "Creep behavior using Ti-TiB in situ composites." Journal of Advanced Science 14, no. 1/2 (2002): 57–58. http://dx.doi.org/10.2978/jsas.14.57.

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Banerjee, R., P. C. Collins, and H. L. Fraser. "Laser Deposition of In Situ Ti – TiB Composites." Advanced Engineering Materials 4, no. 11 (2002): 847–51. http://dx.doi.org/10.1002/1527-2648(20021105)4:11<847::aid-adem847>3.0.co;2-c.

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36

Wei, Sai, Zhao Hui Zhang, Xiang Bo Shen, Fu Chi Wang, and Shu Kui Li. "Simulation of the Temperature Distribution of Gradient Ti-TiB Composites Prepared by Spark Plasma Sintering Process." Advanced Materials Research 295-297 (July 2011): 2321–24. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.2321.

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An electrical – thermal coupled finite element model (FEM) is developed to investigate the temperature distribution during spark plasma sintering (SPS) with a pre-designed graded graphite die. The sample used in this investigation consists of five layers with different contents of Ti and TiB (45 wt % Ti, 55 wt %Ti, 65 wt % Ti, 75 wt % Ti and 85 wt % Ti). The temperature distribution in gradient Ti-TiB composites was obtained. Owing to the use of the die with changing cross section, a temperature difference of 142K in the axial direction inside the sample is achieved, while the maximum radial t

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37

Kumar, M. Selva, P. Chandrasekar, Balasubramanian Ravisankar, and M. Mohanraj. "Synthesis and Characterization of Ti-TiB Composites Processed through Vacuum Sintering." Applied Mechanics and Materials 592-594 (July 2014): 765–69. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.765.

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In the present work, an attempt has been made to explore the general microstructural characteristics and mechanical properties of titanium-titanium boride (Ti-TiB) composites (20 and 40 vol.% TiB reinforcement in Ti matrix) processed by Vacuum Sintering. The microstructures of the composites were investigated using electron probe micro analysis, scanning electron microscopy and X-ray diffraction. Obviously, the elastic modulus, shear modulus and hardness are found to increase with increase in volume fraction of titanium boride. The effects of titanium boride reinforcements on elastic propertie

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IZUI, Hiroshi, Kazuhiro TOEN, Shoji KAMEGAWA, and Yoshiki KOMIYA. "Dry sliding wear behavior of TiB/Ti and TiC/Ti composites." Mechanical Engineering Journal 5, no. 4 (2018): 17–00523. http://dx.doi.org/10.1299/mej.17-00523.

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39

Ding, Long-Xian, Keijiro Nakasa, Masahiko Kato, and Takashi Tachiyama. "Fabrication of TiB-TiC, TiB-TiN and TiB₂-TiC Composites and Their Bonding to Ti-6Al-4V Alloy by Spark and Resistance Sintering." Journal of the Japan Institute of Metals 66, no. 6 (2002): 597–605. http://dx.doi.org/10.2320/jinstmet1952.66.6_597.

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40

Cui, Guorong, Bo Yang, Jiabin Hou, Wenzhen Chen, and Wencong Zhang. "The Sticking Out Mechanism and Growth of TiB Whiskers from TiBw/Ti-6Al-4V Composites during Sintering." Metals 10, no. 11 (2020): 1467. http://dx.doi.org/10.3390/met10111467.

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The process of TiB whiskers (TiBw) squeezed out and the growth of sticking out TiBw were investigated in TiBw/Ti-6Al-4V composites via adding 5 vol% TiB2 powders. TiB2 distributed along the surface of Ti-6Al-4V powders by low energy milling, resulted in the enrichment region of B and Ti elements. During sintering, TiBw nucleated and grew along the [010] direction with the diffusion of B and Ti atoms in the enrichment region. Due to larger thermal expansion ratio of TiBw, the TiBw were squeezed out from the Ti matrix, and the sticking out TiBw grew gradually with the diffusion of B and Ti atoms

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Umeda, Junko, Lei Jia, Biao Chen, et al. "Precipitation and Distribution Behavior of In Situ-Formed TiB Whiskers in Ti64 Composites Fabricated by Selective Laser Melting." Crystals 11, no. 4 (2021): 374. http://dx.doi.org/10.3390/cryst11040374.

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The precipitation and distribution behaviors of in situ-formed titanium boride whiskers (TiB) in TiBw-reinforced Ti-6%Al-4%V (Ti64) composites fabricated from an elemental mixture of Ti64 alloy powder and TiB2 particles by selective laser melting were investigated. The primary precipitation of TiB whiskers strongly depends on B content. For a B content of less than 2 mass%, when the liquid → β-phase transformation occurred and B atoms were discharged, the B-enriched area formed around the β-phase resulted in the generation of TiB whiskers and their agglomeration at the prior β-grain boundaries

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Feng, Hai Bo, De Chang Jia, Yu Zhou, and Qing Chang Meng. "Microstructural Characterization of In Situ TiB Whiskers in Ti MMCs Fabricated by SPS." Key Engineering Materials 336-338 (April 2007): 1310–12. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.1310.

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The in situ TiB whisker reinforced titanium matrix composites were prepared by mechanical alloying followed by spark plasma sintering. X-ray diffraction, scanning electron microscopy and transmission electron microscopy were used to characterize the microstructure of the TiB whiskers. The effect of sintering temperature on morphologies of in situ TiB whiskers was evaluated. With the increase of spark plasma sintering temperature, the average diameter of in situ TiB whiskers increased. The in situ TiB whiskers exhibited a hexagonal shape with (100), (101) and (10 1 ) planes at the transverse se

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Sung, Si Young, Bong Jae Choi, and Young Jig Kim. "Synthesis and Forming of Titanium Matrix Composites by Casting Route." Key Engineering Materials 334-335 (March 2007): 297–300. http://dx.doi.org/10.4028/www.scientific.net/kem.334-335.297.

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The aim of this study is to evaluated the possibility of the in-situ synthesized (TiC+TiB) reinforced titanium matrix composites (TMCs) for the application of structural materials. In-situ synthesis and casting of TMCs were carried out in a vacuum induction melting furnace with Ti and B4C. The synthesized TMCs were characterized using scanning electron microscopy, an electron probe micro-analyzer and transmission electron microscopy, and evaluated through thermodynamic calculations. The spherical TiC plus needle-like and large, many-angled facet TiB reinforced TMCs can be synthesized with Ti a

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Wei, Li, Shan Shaofu, and Fang Qianghan. "Surface properties of the in situ formed ceramic-reinforced composite coating on TA15 alloy." Science and Engineering of Composite Materials 19, no. 4 (2012): 387–91. http://dx.doi.org/10.1515/secm-2012-0045.

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AbstractA hard composite coating was fabricated by laser alloying of the Co-Fe-Al+B4C-Si3N4 mixed powders on TA15 (Ti-6Al-2Zr-1Mo-1V) titanium alloy in an open system. The composite coating mainly consisted of γ-Co, TiB2, TiB, TiC0.3N0.7, SiC, Ti3Al, FeAl, and Co-Ti intermetallics. The TEM diffraction pattern results indicated that the orientation relationship between TiB2 and TiC0.3N0.7 was (1-20)TiB2//(2-20)TiC0.3N0.7 in such a coating. Furthermore, during the alloying process, a number of Mo and Zr entered into the molten pool from the substrate due to the dilution effect, which refined the

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45

Banerjee, R., A. Genç, D. Hill, P. C. Collins, and H. L. Fraser. "Nanoscale TiB precipitates in laser deposited Ti-matrix composites." Scripta Materialia 53, no. 12 (2005): 1433–37. http://dx.doi.org/10.1016/j.scriptamat.2005.08.014.

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Zhang, Xiaonong, Weijie Lü, Di Zhang, Renjie Wu, Yujun Bian, and Pingwei Fang. "In situ technique for synthesizing (TiB+TiC)/Ti composites." Scripta Materialia 41, no. 1 (1999): 39–46. http://dx.doi.org/10.1016/s1359-6462(99)00087-1.

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Singh, Harshpreet, Muhammad Hayat, Zhen He, Vanessa K. Peterson, Raj Das, and Peng Cao. "In situ neutron diffraction observations of Ti-TiB composites." Composites Part A: Applied Science and Manufacturing 124 (September 2019): 105501. http://dx.doi.org/10.1016/j.compositesa.2019.105501.

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48

Saito, Takashi. "The automotive application of discontinuously reinforced TiB-Ti composites." JOM 56, no. 5 (2004): 33–36. http://dx.doi.org/10.1007/s11837-004-0125-3.

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49

Jackson, Ben, Rob Torrens, Leandro Bolzoni, Fei Yang, Mike Fry, and Aamir Mukhtar. "Additive Manufacturing of Ti-6Al-4V with Added Boron: Microstructure and Hardness Modification." Key Engineering Materials 770 (May 2018): 165–73. http://dx.doi.org/10.4028/www.scientific.net/kem.770.165.

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Titanium alloy composites with titanium boride (TiB) discontinuous reinforcement have shown improved performance in terms of strength, stiffness, and hardness. Producing this composite through selective laser melting (SLM) can combine the advantages of freeform design with the ability to produce TiB reinforcement in-situ. In this study, SLM was used to consolidate a pre-alloyed Ti-6Al-4V (Ti64) and amorphous boron (B) powder mixture with the intent of producing 1.5wt% TiB reinforcement in a Ti64 matrix. The processing parameters of laser power and scanning speed were investigated for their eff

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Hu, Zheng Yang, Zhao Hui Zhang, Qi Song, Shi Pan Yin, Hao Wang, and Xian Yu Li. "Effects of Heat-Treatment on Microstructures and Mechanical Properties of Hot Deformed TiB/Ti-6Al-4V Matrix Composites." Materials Science Forum 960 (June 2019): 135–39. http://dx.doi.org/10.4028/www.scientific.net/msf.960.135.

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In this paper, TiB reinforced Ti-6Al-4V matrix composites were successfully fabricated using a spark plasma sintering, hot rolling and heat treating process. (Transformed β-Ti + secondary α-Ti) domains were formed in TiB/TMCs after heat treatment. The size of these domains increases from 2.5 μm to 4.6 μm with the increase of solution time. The aspect ratio of whiskers monotonously decreases along with the solution time extending. The highest ultimate tensile strength of 1332 MPa and yield-strength of 1315 MPa were achieved by (940 °C, 15min+ water-quenching+537 °C, 4h) TMC.

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