Titanium‐Boride Eutectic Materials: Phase Equilibria and Properties of Alloys in the Ti‐Rich Portion of the Ti—Sn—B System.

Bondar, A. А.; Velikanova, Т. Ya.; Borysov, D.B.; Artyukh, L. V.; Bilous, O.O.; Burka, M.P.; Fomichov, O.S.; Tsyganenko, N.I.; Fistov, S. O.

doi:10.1002/chin.200547014

Cited by 2 publications

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“…This is mainly because the metal matrix hardens when doped with tin since the latter is not highly soluble in TiB (solubility no more than 0.1 at.%) and has no noticeable effect on the microstructure of the (Ti) + TiB two-phase alloys. Figure 9 shows that 2.6 at.% Sn (3 at The maximum hardness is exhibited by the alloy containing 18.5 at.% Sn owing to an additional reinforcing phase, Ti 3 Sn, besides TiB [36]. The microhardness of the Ti-Sn-B alloys behaves in the same way (Fig.…”

Section: As-cast Ternary Alloysmentioning

confidence: 65%

“…3a): it increases with tin content. When the tin content of the metal matrix reaches 6 at.%, the temperature of incipient sharp softening increases from 500 to 600°C and even to 700°C for the alloy with the matrix saturated with tin (13 at.%) [36].…”

Section: As-cast Ternary Alloysmentioning

confidence: 99%

“…For this reason, a scientifically sound selection of a doping agent is hardly possible. The previous papers focused on examining the phase equilibria and constructing the phase diagrams in titanium corners of the following ternary systems: Ti-Al-B [32], Ti-Si-B [12,33], Ti-Ge-B [34,35], and Ti-Sn-B [36] ( Table 2). The objective of this paper is to analyze how doping with p-elements (Al, Si, Ge, Sn) and zirconium influences the structure and mechanical properties (hardness from room temperature to 900°C, strength, and plasticity) of alloys based on the two-phase titanium-boride eutectic.…”

Section: Introductionmentioning

confidence: 99%

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Effect of doping with p-elements (Al, Si, Ge, Sn) and zirconium on the structure and properties of titanium-boride eutectic alloys

Tsyganenko

Bondar

Bilous

et al. 2011

Powder Metall Met Ceram

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The effect of silicon, germanium, tin (X), and aluminum on the structure, physicochemical and mechanical properties of 8.5 at.% Al and 7.5 at.% B) quaternary alloys is studied by metallography, scanning electron microscopy (SEM), X-ray diffraction, differential thermal analysis (DTA), microhardness measurements, Vickers hardness measurements (from room temperature to 900°C), bending tests (room temperature), and compression tests (from room temperature to 700°C). The alloys are melted in an arc furnace from pure materials. Doping with p-elements (Al, Si, Ge, and Sn) does not change the specific titanium-boride eutectic structure in the two-phase (Ti) + TiB field. The doping additions hardly change the chemical composition of the eutectic and only decrease the boron content by 1-2 at.%. The Al, Si, Ge, and Sn (p-elements) are not soluble in TiB titanium borides and completely concentrate in the metal matrix in two-phase (Ti) + TiB alloys. The temperature of incipient sharp softening is shown to be exclusively connected with the matrix composition. It is determined that p-elements increase the hardness and strength of titanium-boride eutectic alloys in the entire temperature range of interest and increase the temperature of incipient sharp softening from 500 to 600-650°C. INTRODUCTIONTitanium monoboride (TiB) is a promising compound for reinforcement of titanium alloys and producing titanium-matrix composites. It is in thermodynamic equilibrium with the titanium-based phase characterized by low boron solubility. The boride and titanium phases have close thermal expansion coefficients and show favorable crystallographic coherency (the structure of the phases is shown in Table 1). Titanium boride is refractory and hard and has good wear resistance and high Young's modulus.Analysis of scientific publications of the last years shows that the number of papers focusing on titanium-matrix boride-reinforced composites increases. Test materials are mainly produced with powder metallurgy

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Section: As-cast Ternary Alloysmentioning

confidence: 65%

Section: As-cast Ternary Alloysmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of doping with p-elements (Al, Si, Ge, Sn) and zirconium on the structure and properties of titanium-boride eutectic alloys

Tsyganenko

Bondar

Bilous

et al. 2011

Powder Metall Met Ceram

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“…No data on the effect of germanium on the properties of titanium-boride alloys are found in literature. The results of our research illustrate that germanium acts similarly to tin [3] and silicon [4], which are commonly used additions for titanium alloys.…”

Section: Introductionmentioning

confidence: 99%

Titanium-boride eutectic materials: Structure of titanium-rich Ti-Ge-B alloys and phase equilibria at crystallization temperatures

Borisov

Artyukh

Bondar

et al. 2007

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Titanium‐Boride Eutectic Materials: Phase Equilibria and Properties of Alloys in the Ti‐Rich Portion of the Ti—Sn—B System.

Cited by 2 publications

References 1 publication

Effect of doping with p-elements (Al, Si, Ge, Sn) and zirconium on the structure and properties of titanium-boride eutectic alloys

Effect of doping with p-elements (Al, Si, Ge, Sn) and zirconium on the structure and properties of titanium-boride eutectic alloys

Titanium-boride eutectic materials: Structure of titanium-rich Ti-Ge-B alloys and phase equilibria at crystallization temperatures

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