Reactions Between Ti2AlC, B4C, and Al and Phase Equilibria at 1000 °C in the Al-Ti-B-C Quaternary System

Agne, Matthias T.; Anasori, Babak; Barsoum, Michel W.

doi:10.1007/s11669-015-0371-9

Cited by 17 publications

(6 citation statements)

References 47 publications

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“…Compared with sintering with applied pressure, pressureless sintering has the advantage of higher efficiency and improving the ability to satisfy shape requirements. Although Ti 3 AlC 2 -Al 2 O 3 -TiAl 3 [16] and Ti 2 AlC-B 4 C-Al composites [17] fabricated through pressureless sintering have been reported, more detailed research is needed on preparing TiC-Ti 3 Al composite.…”

Section: Introductionmentioning

confidence: 99%

Sintering, mechanical, electrical and oxidation properties of ceramic intermetallic TiC–Ti3Al composites obtained from nano-TiC particles

Mondal

Koç

2016

Ceramics International

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The paper discusses the development of a new material system for interconnect application in Solid Oxide Fuel Cells (SOFC) based on TiC-Ti 3 Al. Nano-sized TiC powders utilized in this research were synthesized using carbon coated TiO 2 precursors from a patented process. The pressureless sintering of TiC-Ti 3 Al in a vacuum was applied at temperatures between 1100-1500 o C and content of Ti 3 Al was varied in the range of 10-40 wt. %. X-ray diffraction (XRD) and scanning electron microscope (SEM) were used for phase evaluation and sintering behavior. Relative density increased markedly with increasing sintering temperature because of grain growth and formation of the Ti 3 AlC 2 secondary phase. Dense products (>95% TD) were prepared from nanosized TiC powders with 10 and 20 wt. % Ti 3 Al, but with about 8 to 10% porosity for 30 and 40 wt. % Ti 3 Al. The mechanical properties were determined from Vickers hardness and fracture toughness calculations. Vickers hardness decreased and fracture toughness increased with increasing Ti 3 Al content. The electrical conductivity and oxidation behavior of TiC-Ti 3 Al composites were investigated to evaluate the feasibility for SOFC interconnect application. The electrical conductivity measurements in the air at 800ºC for 100 hours were made using the Kelvin 4wire method.

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Section: Introductionmentioning

confidence: 99%

Sintering, mechanical, electrical and oxidation properties of ceramic intermetallic TiC–Ti3Al composites obtained from nano-TiC particles

Mondal

Koç

2016

Ceramics International

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“…The highest surface roughness was obtained for the as-received sample, Figure 9. This high surface roughness can be attributed to lower hardness [33][34][35][36][37][38][39][40]. The hardness of the AA6061 alloy is increased with the addition of all reinforcement's material, Table 3.…”

Section: Resultsmentioning

confidence: 99%

“…Boron carbide is one of the important reinforcing materials used in aluminum based matrix composites [28][29][30][31][32][33][34][35][36][37][38][39][40]. Boron carbide volume fraction is generally below 15 % in the metal matrix composite [32][33][34][35][36][37][38][39][40]. Addition of boron carbide is limited because aluminum and boron carbide has poor wetting ability.…”

Section: Introductionmentioning

confidence: 99%

Abrasive wear behavior of various reinforced AA6061 matrix composites produced with hot pressing process: A comparative study

Ovalı

2017

Materialwissenschaft Werkst

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The effects of various reinforcements (boron carbide -silicon carbide-alumina) with constant volume fraction (20 %) on the abrasive wear properties of AA6061 matrix composites produced with hot pressing process were investigated. The wear tests were carried out using a pin-on-disk wear tester by sliding at sliding speeds of 1.2 m/s against silicon carbide paper. Applied normal loads have 5, 10 and 15 N magnitude at room temperature. The wear morphologies of the worn surfaces were analyzed using a scanning electron microscope in order to examine the wear characteristics and to investigate the wear mechanisms. The effects of reinforcement type on the wear behavior of AA6061 matrix composites were observed. Results exhibited that the optimum wear resistance obtained with the boron carbide reinforced composite parts. All reinforced samples showed better wear resistance compared to as-received samples in all the studied conditions. Scanning electron microscope characterization showed that test specimens have complex combination of wear mechanisms on the worn surface. Keywords: Composite, wear / AA6061 / boron carbide / silicon carbide / alumina Die Wirkungen verschiedener Verstä rkungen (Borcarbid -Siliziumkarbid -Aluminiumoxid) mit konstantem Volumenanteil (20 %) auf das Abriebverhalten von durch Heißpressen hergestellten AA6061 Matrixverbundwerkstoffen wurden untersucht. Die Verschleißuntersuchungen wurden bei einer Gleitgeschwindigkeit von 1,2 m/s gegen Siliziumkarbid mit einem Stift-Scheibe-Verschleißtester durchgefü hrt bei Normalbelastungen von 5, 10 und 15 N bei Raumtemperatur. Die Verschleiß-Morphologien der verschlissenen Oberflä chen wurden unter Verwendung eines Rasterelektronenmikroskops auf die Verschleißmechanismen untersucht. Die Auswirkungen der Verstä rkung auf das Verschleißverhalten von AA6061 Matrix-Verbundmaterialien wurden beobachtet. Die Ergebnisse zeigen, dass die optimale Verschleißfestigkeit durch mit Borcarbid verstä rkte Verbundteile erhalten wird. Alle Proben wiesen eine bessere Verschleißfestigkeit im Vergleich zu Proben ohne Verstä rkung in allen untersuchten Bedingungen auf. Die Charakterisierung durch das Rasterelektronenmikroskops zeigte, dass die Prü flinge eine komplexe Kombination von Verschleißmechanismen auf der geschä digten Oberflä che haben.

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“…However, a small mount of B 4 C was detected by XRD. According to the equilibrium tetrahedron of Al-Ti-B-C, it is probable that the system has not reached equilibrium [14]. In addition, it may also be caused by the loss of heat which leads to the incomplete reaction between Ti and B 4 C. Figure 2 shows the SEM images of Al-5Ti-0.75B-0.2C and Al-5Ti-1B master alloys.…”

Section: Methodsmentioning

confidence: 99%

Grain Refining Efficiency of SHS Al–Ti–B–C Master Alloy for Pure Aluminum and Its Effect on Mechanical Properties

Liu

et al. 2016

Acta Metall. Sin. (Engl. Lett.)

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A new Al-5Ti-0.75B-0.2C master alloy was successfully prepared by self-propagating high-temperature (SHS) reaction from an Al-Ti-B 4 C system with molten Al. Microstructure and phase characterization of the prepared Al-5Ti-0.75B-0.2C master alloy show that the nearly spherical TiC particles, hexagonal or rectangular TiB 2 particles, and blocklike TiAl 3 particles distribute uniformly in the aluminum matrix. Grain refining test on commercial pure aluminum indicates that Al-5Ti-0.75B-0.2C master alloy exhibits a better grain refining performance than Al-5Ti-1B master alloy. By addition of 0.2 wt% Al-5Ti-0.75B-0.2C master alloy, the average grain size of a-Al can be effectively refined to 160 ± 5 lm from about 3000 lm, and the tensile strength and elongation are increased by about 20% and 14.1% due to the grain refinement.

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Reactions Between Ti2AlC, B4C, and Al and Phase Equilibria at 1000 °C in the Al-Ti-B-C Quaternary System

Cited by 17 publications

References 47 publications

Sintering, mechanical, electrical and oxidation properties of ceramic intermetallic TiC–Ti3Al composites obtained from nano-TiC particles

Sintering, mechanical, electrical and oxidation properties of ceramic intermetallic TiC–Ti3Al composites obtained from nano-TiC particles

Abrasive wear behavior of various reinforced AA6061 matrix composites produced with hot pressing process: A comparative study

Grain Refining Efficiency of SHS Al–Ti–B–C Master Alloy for Pure Aluminum and Its Effect on Mechanical Properties

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