Elastic isotropy originating from heterogeneous interlayer elastic deformation in a Ti3SiC2 MAX phase with a nanolayered crystal structure

Liu, Ruxia; Tane, Masakazu; Kimizuka, Hajime; Shirakami, Yuji; Ikeda, Ken; Miura, Seiji; Morita, Koji; Suzuki, Tohru; Sakka, Yoshio; Zhang, Lianmeng; Sekino, Tohru

doi:10.1016/j.jeurceramsoc.2020.11.026

Cited by 11 publications

(3 citation statements)

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“…10a) and fracture toughness of the composite (Fig. 10b) at 800 °C may be explained in terms of phase transformations due to high-temperature diffusion of some elements, in particular, aluminum and oxygen [18,52,58,102]. Besides, distinct "needle-shaped Cr2AlC phase-Ti(Cr) matrix" interfaces disappeared due to the interdiffusion of chromium, aluminum, and oxygen between the chromium oxide phase, the Cr2AlC MAX phase, and the matrix phase.…”

Section: Ti-si-al-zr-c Composite (3)mentioning

confidence: 96%

“…Among a variety of MAX phases, Ti3SiC2 MAX phase does not demonstrate perfect self-healing performance. In the case when the A atoms of Ti3SiC2 are partially replaced with Al, Ti3Si1-xAlxC2 solid solutions are formed [18,52,58] that improves selfhealing performance of the material due to the rapid diffusion and oxidation of aluminum and a high oxidation resistance of aluminum oxide. Besides, the oxidation temperature of Al can be lowered to 900 °C in the case of partial replacement of Al with Sn in Ti2AlC MAX phase [18,49,52,59].…”

Section: Introductionmentioning

confidence: 99%

“…However, no significant increase in the mechanical strength was found in such a composite because of the low mechanical strength of a SnO2 compound and the low bond strength [52, 59,60]. It is known that MAX phases are among a variety of compounds which belong to the hexagonal crystal system [51,52,57,58]. This peculiarity allows using HP and SPS techniques of pressure-assisted sintering for manufacturing textured bulk MAX phases.…”

Section: Introductionmentioning

confidence: 99%

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THE EFFECT OF ULTRA-FINE ALLOYING ELEMENTS ON THE PHASE COMPOSITION, MICROSTRUCTURE, HIGH-TEMPERATURE STRENGTH AND FRACTURE TOUGHNESS OF Ti–Si–X AND Ti–Cr–X COMPOSITES

Kulyk

Vasyliv

Duriagina

et al. 2022

Acta Metall Slovaca

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Advanced Ti-based composites are promising for applications in components of modern aircraft and rocket engines as well as other power equipment owing to their high strength-to-weight ratio and fracture toughness in a temperature range of 20 °C to 650 °C. However, there is a need to increase their operating temperature range up to 700−800 °C. In this work, mechanical behavior of Ti–Si–X composites (X=Al and/or Zr, Sn, C) has been studied. For comparison, mechanical behavior of Ti–Cr–X composite (X=Al and/or C) has been studied. As-cast and thermo-mechanically deformed series of beam specimens were examined. Strength tests of specimens were performed under three-point bending in a temperature range of 20 °C to 1000 °C. Single-edge notch beam (SENB) tests under three-point bending of specimen series were carried out in a temperature range of 20 °C to 900 °C for estimating fracture toughness of materials. Based on the constructed dependences of fracture toughness and strength on testing temperature for the specimen series as well as the microstructure and failure micromechanism analyses, the role of ultra-fine alloying elements in achieving good high-temperature strength and fracture toughness of the studied composites was substantiated.

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Section: Ti-si-al-zr-c Composite (3)mentioning

confidence: 96%