Influence of TiB2 particle size on the microstructure and properties of Al matrix composites prepared via mechanical alloying and pressureless sintering

Balcı, Özge; Ağaoğulları, Duygu; Gökçe, Hasan; Duman, İsmail; Öveçoğlu, M. Lütfi

doi:10.1016/j.jallcom.2013.03.007

Cited by 83 publications

(20 citation statements)

References 49 publications

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“…В літературі детально розглянуті питання щодо взаємодії алюмінію та його сплавів з різноманітними зміцнюючими фазами [1][2][3][4] та від-мічається, що карбід титану є однією з найперспек-тивніших добавок внаслідок його високої твердості, модуля пружності, низької питомої ваги. Крім того, параметри гратки TiС близькі до параметрів гратки твердого розчину алюмінію [5][6][7].…”

Section: вступunclassified

Мікроструктура Та Властивості Гарячештампованих Алюмінієвих Композитів З Карбідовмісткою Лігатурою Та Карбідом Титану

Shishkina¹,

Bagliuk²

2018

CSL

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A. (2018) Microstructure and properties of aluminum composites with carbide-containing master alloy and titanium carbide prepared by hot-forging 2(39), doi: 10.26909/csl.2.2018.4 For the production of alumino-matrix composites, three compositions of the master alloy are selected20Al-16C-64Ti (%, wt.) with the maximum carbon content and the fi nest titanium carbide particles formed after synthesis, 40Al-6C-54Ti (% , wt.) and 45Al-11C-44Ti (% wt.) with a maximum content of aluminum and with diff erent titanium and carbon ratios, to determine the eff ect of the composition of the master alloy on the mechanical properties of hot forged aluminosar composite materials. The Al-TiC composite was obtained to compare it properties with Al-master alloy composite materials. A technological scheme for the production of aluminum matrix composites by the method of hot forging was developed, the regularities of the processes of their structure formation in the volume of consolidated billets, physical and mechanical properties, tribotechnical properties and corrosion resistance have been investigated. The hardness and strength properties of the composites with master alloy are signifi cantly lower than those of samples with TiC, whereas the ductility of the latter is higher. The results of complex tribotechnical tests of hot forged aluminium composites have shown that the materials under study in a pair of friction with CT105 steel undergo signifi cant damage as a result of the implementation of the adhesive wear mechanism. Study of the corrosion resistance of the materials in a 3,5 % solution of NaCl have shown that their corrosion resistance is 1 point (absolutely stable), which signifi cantly exceeds the corrosion resistance of aluminum, Al-TiC composite and one of the most widely used aluminum alloys 1160.In a solution of 3 % NaCl + ml/l HCl, almost all investigated hot stamped aluminum matrix composite materials belong to a group of low-strength or lower-stable. For materials containing 15 % TiC -85 % corrosion resistance decreases to 9th ball, which translates them into a group of unstable. Such a signifi cant drop in corrosion resistance in the second solution is due to the fact that acids, like alkalis, destroy the oxide fi lm on aluminum, and the metal dissolves. This is especially true for acids containing halogens (hydrochloric, sulfuric, hydrofl uoric acid) -their aggressiveness increases with the growth of the mass of halogen.Thus, the corrosion resistance of the studied composite materials improves with the strengthening of their particles of titanium carbide and carbide-containing powdered ligatures of the Al-Ti-C system. However, unlike the 85 % Al-15 % (TiC) composite, samples with a diff erent ligation compound exhibit absolute resistance in a 3,5 % NaCl solution. Presintering slightly improves the corrosion resistance of 85 % Al-15% (TiC) composites, mainly due to the formation of a stronger contact between the matrix material and the reinforcing phase. In a solution of 3 % NaCl + ml/l HCl, these material...

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Section: вступunclassified

Мікроструктура Та Властивості Гарячештампованих Алюмінієвих Композитів З Карбідовмісткою Лігатурою Та Карбідом Титану

Shishkina¹,

Bagliuk²

2018

CSL

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“…On the basis of these results, it is clear that wear resistances of the sintered samples are in the same increasing trend with their microhardness values, excepting the N5-5CoPS sample. The relation between wear volume loss and microhardness has been investigated by several researchers [58,59]. The highest wear resistance was obtained for the N5-2CoPS sample among the samples and this is most likely due to the NbCo 2 particles which restrict the flow of the material during sliding under an applied load.…”

Section: Mechanical Properties Of the Sintered Productsmentioning

confidence: 99%

Effect of sintering techniques on the microstructure and mechanical properties of niobium borides

Balcı

Ağaoğulları

Muhaffel

et al. 2016

Journal of the European Ceramic Society

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a b s t r a c tThis study reports on the consolidation of niobium boride powders by cold pressing/pressureless sintering (PS, with or without Co addition) and spark plasma sintering (SPS) techniques. Niobium boride powders (containing NbB, Nb 3 B 4 and NbB 2 phases) which were mechanochemically synthesized from Nb 2 O 5 , B 2 O 3 and Mg blends and purified by HCl leaching were used as precursor material. The effects of different sintering techniques on the consolidation behaviour, microstructure, densification rate and mechanical properties (microhardness, wear characteristics, elastic modulus, indentation response and fracture toughness) of the bulk products were investigated. PS with Co addition resulted in superior properties than those yielded after PS without Co addition and SPS. Bulk niobium boride products having relative density of 93-98%, microhardness of 24-28 GPa, wear volume loss of 2.8-4.5 × 10 −4 mm 3 , elastic modulus of 508-552 GPa and fracture toughness of 4.05-4.74 MPa m 1/2 were obtained by Co (2 or 5 wt.%) activated PS at 1500 • C.

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“…Moreover, ceramic particles commonly employed as reinforcement such as silicon carbide (SiC) or titanium diboride (TiB 2 ) present high strength, stiffness, and excellent fatigue and wear resistance . These mechanical properties can also be improved by a decrease of reinforcement size, from micrometric to nanometric size . Particularly, the addition of n‐TiB 2 particles on aluminum alloys would prevent the formation of brittle products in the matrix/reinforcement interface.…”

Section: Introductionmentioning

confidence: 99%

Corrosion behavior of mechanically alloyed A6005 aluminum alloy composite reinforced with TiB₂ nanoparticles

Abu-warda

López

Escalera-Rodriguez

et al. 2019

Materials & Corrosion

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Corrosion susceptibility of the A6005 alloy reinforced with n‐TiB2 was studied through electrochemical tests. The mechanical alloying (MA) technique was used as the processing route and a posterior hot extrusion was employed to consolidate the powders. Bulk samples were characterized by X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, and microhardness tests. The combination of both MA processing and 5 wt% n‐TiB2 addition in the aluminum matrix produced 61% increase of microhardness. Electrochemical tests were performed in 3.5 wt% NaCl solution to assess the effect of MA processing and TiB2 presence on corrosion behavior. The corrosion resistance of the samples processed by MA increased slightly compared with the base A6005 alloy. The amorphous Al2O3 phase formed during MA processing was the cause of this increase, providing continuity to the passive layer. Furthermore, the addition of TiB2 on the sample processed by MA did not significantly affect corrosion resistance. Polarization tests confirmed that the reinforced sample had similar icorr to that of the unreinforced alloy, and cyclic polarization tests revealed that pit nucleation sites were localized in the interface between Al2O3 and the aluminum matrix.

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Influence of TiB2 particle size on the microstructure and properties of Al matrix composites prepared via mechanical alloying and pressureless sintering

Cited by 83 publications

References 49 publications

Мікроструктура Та Властивості Гарячештампованих Алюмінієвих Композитів З Карбідовмісткою Лігатурою Та Карбідом Титану

Мікроструктура Та Властивості Гарячештампованих Алюмінієвих Композитів З Карбідовмісткою Лігатурою Та Карбідом Титану

Effect of sintering techniques on the microstructure and mechanical properties of niobium borides

Corrosion behavior of mechanically alloyed A6005 aluminum alloy composite reinforced with TiB₂ nanoparticles

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Influence of TiB2 particle size on the microstructure and properties of Al matrix composites prepared via mechanical alloying and pressureless sintering

Cited by 83 publications

References 49 publications

Мікроструктура Та Властивості Гарячештампованих Алюмінієвих Композитів З Карбідовмісткою Лігатурою Та Карбідом Титану

Мікроструктура Та Властивості Гарячештампованих Алюмінієвих Композитів З Карбідовмісткою Лігатурою Та Карбідом Титану

Effect of sintering techniques on the microstructure and mechanical properties of niobium borides

Corrosion behavior of mechanically alloyed A6005 aluminum alloy composite reinforced with TiB2 nanoparticles

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Corrosion behavior of mechanically alloyed A6005 aluminum alloy composite reinforced with TiB₂ nanoparticles