Special features of the structure and phase composition of a Ti – 23Al – 26Nb/Al layered material obtained by plasma-spark sintering

Yurovskikh, А. S.; Демаков, С. Л.; Kolosova, E.V.

doi:10.1007/s11041-013-9532-9

Cited by 3 publications

(1 citation statement)

References 12 publications

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“…Alloys based on the orthorhombic titanium aluminide Ti2AlNb (O-alloys) are of interest for the use in following: as materials in aircraft engines operating at higher temperatures compared to industrial titanium alloys based on the α-and β-solid solutions [1][2][3]; materials with higher fire safety [4]; materials for welded products [5]; as matrices for heat-resistant composites [6].…”

Section: Introductionmentioning

confidence: 99%

Phase Transformations in the Quenched Alloy Based on Orthorhombic Titanium Aluminide during Heating

Илларионов

Гриб

Попов

2021

SSP

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Phase transformations in the alloy based on the orthorhombic titanium aluminide (Ti-24,3Al-24,8Nb-1,4V-1,0Zr-0,6Mo-0,3Si – at. %) were studied by differential thermal analysis. The alloy was quenched from the different phase regions (β+O, β+O+α2+(Vω), β+α2, β) and was subjected to continuous heating up to . It was found that the heating temperature of the O-alloy, which determines its phase state during quenching, affects the temperature ranges, intensity, and stages of the phase transformations during subsequent heating.

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Section: Introductionmentioning

confidence: 99%

Phase Transformations in the Quenched Alloy Based on Orthorhombic Titanium Aluminide during Heating

Илларионов

Гриб

Попов

2021

SSP

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Ultrasonic tomography of SiC-based materials synthesized by spark plasma sintering of preceramic paper

Sedanova¹,

Сыртанов²,

Kashkarov³

et al. 2019

J. Phys.: Conf. Ser.

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This paper is devoted to study a structure of SiC-based materials using ultrasonic tomography method. The SiC-based materials were fabricated from preceramic paper using spark plasma sintering (SPS) method. Also as part of the study the Young`s modulus and density of sintered materials were determined and the effect of sintering pressure changing to this parameters value was investigated. The preceramic paper is a composite material including a matrix of organic cellulose fibers and inorganic powder filler (SiC). The sintering temperature and pressure were 2373 K and 20-40 MPa, respectively. The holding time for the sintering process was 10 min. The density of sintered materials was investigated by the hydrostatic weighing method. Ultrasonic tomography was implemented using of singlechannel sensor at 10 MHz frequency.

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Research of Structure and Properties of NiCrSiB Sintered Materials Additionally Alloyed with Nb

Kornienko

Ивашутенко

Saigash

et al. 2018

Materials Performance and Characterization

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Self-fluxing nickel-base alloys containing chromium, silicon, boron, and carbon (NiCrSiB) are widely used in industry because of their unique properties. In this study, various amounts of niobium (Nb) powder (2, 4, 6, and 8 wt. %) were added to the self-fluxing powder of an NiCrSiB system in order to obtain more wear-resistant and dense material by using the technology of spark plasma sintering (SPS). SPS of the powder blends was carried out by the SPS 10-4 apparatus (Advanced Technologies, Newport News, VA). The structure and phase composition of the sintered materials were investigated by optical microscopy, scanning electron microscopy, and X-ray diffractometry. This study gives details of porosity and microhardness measurements as well as tribological tests under the friction on the fixed abrasive particles’ conditions. This study demonstrates that phases (the central region of which is niobium carbide) are formed at the interfaces and in the junctions between the self-fluxing powder particles. The addition of Nb contributes to the decrease of porosity and the increase of wear resistance.

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Special features of the structure and phase composition of a Ti – 23Al – 26Nb/Al layered material obtained by plasma-spark sintering

Abstract: Special features of formation of the structure of a layered intermetallic material based on titanium aluminide obtained by the method of plasma-spark sintering of foils are studied. The dependence of the structure on the temperature-and-time treatment parameters is determined.

Cited by 3 publications

References 12 publications

Phase Transformations in the Quenched Alloy Based on Orthorhombic Titanium Aluminide during Heating

Phase Transformations in the Quenched Alloy Based on Orthorhombic Titanium Aluminide during Heating

Ultrasonic tomography of SiC-based materials synthesized by spark plasma sintering of preceramic paper

Research of Structure and Properties of NiCrSiB Sintered Materials Additionally Alloyed with Nb

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