Phase precipitation behavior and mechanical properties of multi-phase Nb–Ti–C and Nb–Ti–Al–C alloys

Wei, Wenqing; Sun, Jing; Zhang, Shuzhi; Liu, Bingqiang; Yan, Kai; Qi, Jiqiu; Zhang, Hao

doi:10.1016/j.msea.2021.141218

Cited by 8 publications

(2 citation statements)

References 29 publications

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“…Furthermore, it was reported that the Nb-16Si-10Mo-15W alloy could be strengthened by addition a solution to B in the Nb 5 Si 3 phases [ 23 , 24 , 25 ]. Similarly, it was confirmed that a C atom could also dissolve in the Nb 3 Al phase [ 26 , 27 , 28 ]. Due to fact that the C atom has a smaller radius than the B atom, the strengthening effect of adding a solid solution to C in the Nb 5 Si 3 would be probably better than that of B.…”

Section: Introductionmentioning

confidence: 92%

Effect of C Addition on the Microstructure and Fracture Properties of In Situ Laminated Nb/Nb5Si3 Composites

Zeng

Xiao

et al. 2023

Materials

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//Nbss and α-Nb5Si3 phases were detected. Meanwhile, Nb2C was observed, and the crystal forms of Nb5Si3 changed in the C-doped composites. Furthermore, micron-sized and nano-sized Nb2C particles were found in the Nbss layer. The orientation relationship of Nb2C phase and the surrounding Nbss was [001]Nbss//[010]Nb2C, (200) Nbss//(101) Nb2C. Additionally, with the addition of C, the compressive strength of the composites, at 1400 °C, and the fracture toughness increased from 310 MPa and 11.9 MPa·m1/2 to 330 MPa and 14.2 MPa·m1/2, respectively; the addition of C mainly resulted in solid solution strengthening.

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Section: Introductionmentioning

confidence: 92%

Effect of C Addition on the Microstructure and Fracture Properties of In Situ Laminated Nb/Nb5Si3 Composites

Zeng

Xiao

et al. 2023

Materials

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“…The element Nb has excellent ductility, low density, and high toughness, perfectly compensating for this deficiency [14,15]. Wei et al found that (Nb,Ti)C and Nb3Al, which form in Nb-Ti-Al-C alloys, can be used as effective reinforcing phases to improve the mechanical properties of Nb-based alloys at high temperatures [16]. Therefore, adding a small amount of Nb to enhance the Ti-Al-C system is a significant attempt at improving the system.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Phase Evolution of Ti-Al-C-Nb Composites Prepared by In Situ Selective Laser Forming

Zhang

Yan

et al. 2022

Materials

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In the present work, a novel Ti-Al-C-Nb composite was prepared using in situ selective laser forming (ISLF). The formation mechanism of the Ti-Al-C-Nb bulks, which were synthesized using elemental titanium, aluminum, and carbon (graphite) powders via ISLF techniques, was investigated. The results showed that the Ti3Al and TiC phases were the dominant synthesis products during the chemical reactions, and these occurred during the ISLF process. The size of the fine nanoscale crystal TiC grains could reach 157 nm at an energy level of 60 J/mm3. The porous structure of the ISLF specimens was disclosed, and an open porosity of 20–44% was determined via the scanning speed and the laser power. Both the high dynamic viscosity and the reactions of the raw powders led to the generation of a considerable number of pores, whereas the specimen processed using 45 W and 100 mm/s possessed the lowest degree of open porosity.

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Grain refinement and strengthening of additively manufactured Nb by doping TiC nanoparticle prepared via laser directed energy deposition

Liu,

Wang

et al. 2024

Additive Manufacturing

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Phase precipitation behavior and mechanical properties of multi-phase Nb–Ti–C and Nb–Ti–Al–C alloys

Cited by 8 publications

References 29 publications

Effect of C Addition on the Microstructure and Fracture Properties of In Situ Laminated Nb/Nb5Si3 Composites

Effect of C Addition on the Microstructure and Fracture Properties of In Situ Laminated Nb/Nb5Si3 Composites

Microstructure and Phase Evolution of Ti-Al-C-Nb Composites Prepared by In Situ Selective Laser Forming

Grain refinement and strengthening of additively manufactured Nb by doping TiC nanoparticle prepared via laser directed energy deposition

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