Formability, Phase Composition, and Microstructure of TiC–(5–50 wt %) NiCr–Based Materials Obtained by Free SHS Compression

Antipov, M. S.; Бажин, П. М.; Чижиков, А. П.; Konstantinov, A. S.; Столин, А. М.; Khomenko, N. Yu.

doi:10.1134/s0036023622100564

Cited by 5 publications

(2 citation statements)

References 29 publications

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“…Thus, materials based on γ-TiAl in situ hardened with the Ti 3 Al phase were obtained from the initial components of titanium, aluminum, and carbon black. A characteristic feature of the obtained materials, as was studied in more detail [54], is the gradient structure of intermetallic phases (Figure 3). This is a consequence of the ongoing thermal diffusion processes during self-propagating high-temperature synthesis and the subsequent sharp decrease in temperature during contact with the press plunger, which completes phase and structure formation.…”

Section: X-ray Powder Diffraction and Microstructurementioning

confidence: 93%

Relationship between Structure and Properties of Intermetallic Materials Based on γ-TiAl Hardened In Situ with Ti3Al

Авдеева

Bazhina

Antipov

et al. 2023

Metals

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In this work, intermetallic materials based on γ-TiAl in situ strengthened with the Ti3Al phase have been obtained from the initial components of titanium and aluminum under the conditions of free SHS-compression in one technological step and in ten seconds. This method combines the process of the combustion of initial components in the mode of self-propagating high-temperature synthesis (SHS) with high-temperature shear deformation of the synthesized materials. The following initial compositions have been studied (mol): Ti–Al, 1.5 Ti–Al, and 3 Ti–Al. Thermodynamic calculations have been carried out and the actual combustion temperature of the compositions under study has been measured. To increase the exothermicity of the studied compositions, a “chemical furnace” based on a mixture of Ti–C powders has been used, which allows us to increase the combustion temperature and stabilize the combustion front. It has been found that the actual combustion temperature of the selected compositions increased from 890–1120 to 1000–1350 °C. The results of X-ray powder diffraction and SEM are presented, mechanical and tribological characteristics of the obtained materials are measured, and 3D images of wear grooves are given. It has been found that a decrease in Ti molar fraction and an increase in Al molar fraction in the initial mixture lead to an increase in the mechanical (hardness up to 10.2 GPa, modulus of elasticity up to 215 GPa) and tribological characteristics (wear up to 4.5 times, coefficient of friction up to 2.4 times) of intermetallic materials.

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Section: X-ray Powder Diffraction and Microstructurementioning

confidence: 93%

Relationship between Structure and Properties of Intermetallic Materials Based on γ-TiAl Hardened In Situ with Ti3Al

Авдеева

Bazhina

Antipov

et al. 2023

Metals

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“…Free SHS compression [36][37][38] and SHS extrusion are promising methods for obtaining compact electrode materials. One of the promising methods for obtaining ceramic and cermet electrode materials used in electro-spark alloying is the SHS extrusion method [39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Coatings Prepared by Electro-Spark Alloying with SHS Electrode Materials Based on Ti-B-Fe-AlN

et al. 2023

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In this work, the features of the phase composition, structures, and properties of coatings obtained on a high-speed steel substrate (steel R6M5) were studied. The coatings were prepared using the ESA method (electro-spark alloying). Electrode materials prepared through self-propagating high-temperature synthesis (SHS) based on (Ti-B-Fe)xAlN with the addition of nanosized AlN particles in the amount of x = 0.5, 10, 15 wt % were used as electrodes. The structure, phase composition, and physical and mechanical properties of the SHS electrode materials are reported. It was found that the coatings inherited the structure of the SHS electrode material and formed two characteristic zones for x = 0 and three zones for x = 5, 10, 15. The surface hardness of the substrate made of the high-speed steel R6M5 with the developed coatings was found to increase up to five times compared to the uncoated substrate. It was found that the wear resistance of the samples with the coating was four to six times higher than that of uncoated samples.

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Titanium-titanium boride matrix composites prepared in-situ under conditions combining combustion processes and high-temperature shear deformation

Бажин

Чижиков

Bazhina

et al. 2023

Materials Science and Engineering: A

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Formability, Phase Composition, and Microstructure of TiC–(5–50 wt %) NiCr–Based Materials Obtained by Free SHS Compression

Cited by 5 publications

References 29 publications

Relationship between Structure and Properties of Intermetallic Materials Based on γ-TiAl Hardened In Situ with Ti3Al

Relationship between Structure and Properties of Intermetallic Materials Based on γ-TiAl Hardened In Situ with Ti3Al

Coatings Prepared by Electro-Spark Alloying with SHS Electrode Materials Based on Ti-B-Fe-AlN

Titanium-titanium boride matrix composites prepared in-situ under conditions combining combustion processes and high-temperature shear deformation

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