Structure and mechanical characteristics of a layered composite material based on TiB/TiAl/Ti

Bazhina, Arina; Konstantinov, A. S.; Чижиков, А. П.; Бажин, П. М.; Столин, А. М.; Авдеева, В. В.

doi:10.1016/j.ceramint.2022.01.318

Cited by 13 publications

(2 citation statements)

References 23 publications

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“…In this case, the Ti 3 Al phase has a higher hardness (4.54 GPa) than the γ-TiAl phase (3.15 GPa), which allows for it to be considered as a strengthening phase for the synthesized material. The conditions of the free SHS compression method make it possible to obtain compact materials with a given structure and a given set of physical and mechanical properties from the initial powder components in the combustion mode and high-temperature shear deformation [37][38][39][40]. The advantages of this method include the speed of the SHS process (tens of seconds), that there is no need to externally heat the initial components [41][42][43], the simplicity of the equipment used, and the shear loads used during deformation, which help to reduce the porosity of the material.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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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“…This fact makes titanium monoboride the most suitable candidate for the development of layered composite materials (LCMs) based on TiB/TiAl(Nb,Mo)B. The deliberate design and formation of a layered composite have the potential to enhance its physical and mechanical properties [22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Compactability Regularities Observed during Cold Uniaxial Pressing of Layered Powder Green Samples Based on Ti-Al-Nb-Mo-B and Ti-B

Bazhin,

Konstantinov,

Chizhikov

et al. 2023

Metals

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We determined the compactability regularities observed during the cold uniaxial pressing of layered powder green samples, taking into account factors such as composition, height, and number of Ti–B (TiB) and Ti–Al–Nb–Mo–B (TNM) layers. The following composition was chosen for the TNM layer at %: 51.85Ti–43Al–4Nb–1Mo–0.15B, while for the Ti-B layer we selected the composition wt %: Ti-B-(20, 30, 40) Ti. Green samples were made containing both 100 vol % TiB and TNM, and those taken in the following proportions, vol %: 70TiB/30TNM, 50TiB/50TNM, 30TiB/70TNM; multilayer green samples were studied in the following proportions, vol %: 35TiB/30TNM/35TiB, 25TiB/25TNM/25TiB/25TNM, 35TNM/30TiB/35TNM. Based on the obtained rheological data, we determined the rheological characteristics of the layered green samples, including compressibility modulus, compressibility coefficient, relaxation time, and limiting value of linear section deformation. These characteristics were found to vary depending on the composition, height, and number of layers. Our findings revealed that reducing the TNM content in the charge billet composition improves the compaction of powder materials under the given technological parameters of uniaxial cold pressing. Moreover, we observed that increasing the boron content and decreasing the amount of titanium in the Ti–B composition enhances the compactability of powder materials. We also established a relationship between the compaction pressure interval and the density of the layered powder green sample.

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Self-Propagating High-Temperature Synthesis of Composite Material Based on Stabilized Zirconium Oxide1

Chizhikov,

Konstantinov,

Antipov

et al. 2023

Refract Ind Ceram

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Structure and mechanical characteristics of a layered composite material based on TiB/TiAl/Ti

Cited by 13 publications

References 23 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

Compactability Regularities Observed during Cold Uniaxial Pressing of Layered Powder Green Samples Based on Ti-Al-Nb-Mo-B and Ti-B

Self-Propagating High-Temperature Synthesis of Composite Material Based on Stabilized Zirconium Oxide1

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