Microstructure and Mechanical Properties of Ti–TiB Based Short-Fiber Composite Materials Manufactured by Casting and Subjected to Deformation Processing

Gaisin, Ramil; Imayev, V. M.; Imayev, R. M.; Gaisina, E.

doi:10.1007/s11182-015-0580-z

Cited by 5 publications

(5 citation statements)

References 19 publications

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“…%. The presence of oxygen in some zones of Ti-TiB alloy, seems to be connected with technology of its manufacture from the powder materials [1][2]5].…”

Section: Resultsmentioning

confidence: 99%

“…In the present article some basic regularities and optimization directions of Ti-TiB n alloys welded joints using both with titanium alloys, and other structural materials, were investigated. The Ti-TiB alloys are characterized by composition type structure, such as titanium matrix reinforced by TiB microfibers [1][2] with high mechanical properties [3][4]. Therefore they can be used for joining of main materials used in mechanical engineering.…”

Section: Introductionmentioning

confidence: 99%

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Structural regularities of welded seam between Ti-TiB and vanadium with 12X18H10T interlayer by using electron beam welding

Лобода

Zvorykin

et al. 2020

Mechanics and Advanced Technologies

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Possibilities of obtaining and using an intermediate layer for joining of Ti-TiB and austenitic steel 12X18H10T (analog of AISI 321; 1.4541; X10CrNiTi18-10) were studied. An alloyed interlayer with TiB reinforcing fibers and the main alloying elements of 12X18H10T steel was formed on the surface of the Ti-TiB sample. Such interlayer was formed during electron beam welding of Ti-TiB with vanadium using foil made of 12X18H10T steel. The microstructure of the interlayer consists of a metal matrix reinforced with microfibers. It's composition corresponds to vanadium-alloyed titanium boride. In comparison to the initial Ti-TiB alloy, significant grinding of reinforcing boride microfibers in the interlayer microstructure was observed. Besides, the phase formations close to Ti2B in zone of primary titanium borides decomposition in the interlayer, initiated by electron beam were determined. As a result, application of Ti (63-68 at. %) and V (18-25 at. %) based interlayer with alloying additives (Fe, Cr, Ni, B, C) has great potential for utilization in electron-beam welding of 12Х18Н10Т steel with Ti-TiB alloy.

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“…%. The presence of oxygen in some zones of Ti-TiB alloy, seems to be connected with technology of its manufacture from the powder materials [1][2]5].…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structural regularities of welded seam between Ti-TiB and vanadium with 12X18H10T interlayer by using electron beam welding

Лобода

Zvorykin

et al. 2020

Mechanics and Advanced Technologies

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“…As mentioned previously, all the specimens fractured in the base metal. This can be explained by the fact that boride fibers' sizes in the weld metal are significantly smaller (TiB fibers ranging from 1 to 20 µ m, see Figures 4,[5][6][7][8][9][10][11][12][13][14][15][16], and Tables 2-4) compared to the base metal (TiB fibers are between 8 and 70 µ m, as shown in Figure 1). Such refinement of boride fibers could possibly lead to higher strength of Ti-TiB, as discussed by Kaczmarek et al [7].…”

Section: Influences Of Welding Parameters and Heat Treatment On Micromentioning

confidence: 99%

“…Strength of such metal-ceramic composites is determined by size and quantity of reinforcing fibers [8,9]. The size and quantity of titanium boride fibers during crystallization from eutectic alloys of Ti-B system [10] are determined, first of all, by the temperature gradient at the crystallization front, the homogeneity of chemical composition in melt volume and the stability of thermal conditions (see Table 1).…”

Section: Introductionmentioning

confidence: 99%

Production and Properties of Electron-Beam-Welded Joints on Ti-TiB Titanium Alloys

Лобода

Zvorykin

et al. 2020

Metals

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In this article, structural features of Ti-TiB and (α+β) Ti alloys in the initial state, in the weld and in the heat-affected zone of electron beam welds were investigated. The influences of welding parameters, such as influence of the electron beam velocity, preheating of the welded alloys and the subsequent annealing of the welded joint on the its microstructure, and the mechanical strength and ductility of the critical elements of the joint were studied by scanning electron microscopy using microprobe Auger spectral and X-ray diffraction analysis and tensile tests. It has been shown that the conditions for rapid crystallization of the material from the melt of the weld contribute to refining of reinforcing fibers of TiB and its hardening in comparison with the starting material Ti-TiB. Besides that, influences of the preferential orientation of TiB reinforcing microfibers (along and across the welded butt joint) on the mechanical properties of the welded joint were investigated bz tensile testing. Using the methods of fractographic analysis, the effect of the boron-containing phase on the fracture character of Ti-TiB welded joints was established. It was shown that, along with the strengthening effect, TiB fibers cause embrittlement of the material.

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“…One of the possible approaches to increase the ductility of the Ti/TiB composite is thermo-mechanical treatment. For example, a noticeable improvement in the mechanical properties of the Ti/TiB composite due to deformation was reported in [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Evolution of microstructure and mechanical properties of Ti-based metal-matrix composites during hot deformation

et al. 2020

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Two Ti-based composites, viz. Ti/TiB and Ti-15Mo/TiB were produced by spark plasma sintering using a Ti-10wt.%TiB2 powder mixture at 1000°C or Ti-14.25(wt.)%Mo-5(wt.)%TiB2 powder mixture at 1400°C, respectively. Specimens of the metal-matrix composites (MMCs) were subjected to uniaxial compression in the temperature range from 500 to 1050°С to determine processing window. Processing maps for both MMCs were constructed and analyzed. Mechanical behavior and microstructure evolution of both MMCs during multiaxial forging (MAF) at 700°C and at a strain rate 10-3 s-1 were studied. The flow stress for the Ti-15Mo/TiB MMC during MAF was ∼2 times higher than that for the Ti/TiB composite. Microstructure evolution during MAF of Ti/TiB MMC was associated with continuous dynamic recrystallization of the titanium matrix and shortening of TiB whiskers by a factor of ~3. The Ti-15Mo/TiB composite microstructure after did not demonstrate the development of recrystallization.

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Microstructure and Mechanical Properties of Ti–TiB Based Short-Fiber Composite Materials Manufactured by Casting and Subjected to Deformation Processing

Cited by 5 publications

References 19 publications

Structural regularities of welded seam between Ti-TiB and vanadium with 12X18H10T interlayer by using electron beam welding

Structural regularities of welded seam between Ti-TiB and vanadium with 12X18H10T interlayer by using electron beam welding

Production and Properties of Electron-Beam-Welded Joints on Ti-TiB Titanium Alloys

Evolution of microstructure and mechanical properties of Ti-based metal-matrix composites during hot deformation

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