Phase diagram of the system titanium-copper

Eremenko, V. N.; Buyanov, Yu. I.; Prima, S. B.

doi:10.1007/bf00775543

Cited by 83 publications

(53 citation statements)

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“…The results of [18,19] correspond to higher temperatures. Note that in the range x Ti = 0.2−0.5 the liquidus data obtained in [20,26,27] are also in good agreement, whereas the data of [18,19] regularly deviate from them. Therefore, the data from [18,19] will be ignored below in describing the liquidus of the (Cu)-phase as well as other sections of the liquidus in the range x Ti = 0.2-0.5.…”

Section: Data On Phase Transformations and Thermodynamic Properties Osupporting

confidence: 64%

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Thermodynamic assessment of the Cu-Ti-Zr system. I. Cu-Ti system

Турчанин

Agraval

Abdulov

2008

Powder Metall Met Ceram

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The CALPHAD method is used for the thermodynamic assessment of the Cu-Ti system that bounds the ternary Cu-Ti-Zr system, which is capable of forming amorphous alloys. The self-consistent parameters of thermodynamic models of the phases are obtained from data on the phase equilibria and thermodynamic properties of liquid alloys and intermetallic compounds. The Gibbs energy of the liquid phase is described using the associated ideal solution model. To describe the thermodynamic properties of the Cu 4 Ti and CuTi intermetallic compounds with homogeneity range, sublattice models are used. The calculated phase diagram of the system and the thermodynamic properties of the phases are in good agreement with experimental data.

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Section: Data On Phase Transformations and Thermodynamic Properties Osupporting

confidence: 64%

“…1) was studied in [18−20, 26, 27]. The data obtained in [20,26,27] are in good agreement and indicative of the flatness of this liquidus line. The results of [18,19] correspond to higher temperatures.…”

Section: Data On Phase Transformations and Thermodynamic Properties Osupporting

confidence: 55%

Thermodynamic assessment of the Cu-Ti-Zr system. I. Cu-Ti system

Турчанин

Agraval

Abdulov

2008

Powder Metall Met Ceram

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“…11) The characteristics of intermetallic compounds Ti 2 Ag and Ti 2 Cu described in the literature 3,4,14,15) are summarized in Table 2. The hardness of Ti 2 Cu is well above that of Ti 2 Ag.…”

Section: Discussionmentioning

confidence: 99%

Machinability of Experimental Ti-Cu Alloys

2008

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This study is an investigation of the machinability of experimental Ti-Cu alloys (2, 5, and 10 mass% Cu) as new dental titanium alloy candidates for CAD/CAM use. The alloys were slotted with a vertical milling machine and carbide square end mills under two cutting conditions. Their machinability was evaluated through cutting force using a three-component force transducer fixed on the table of the milling machine. The horizontal cutting forces of the Ti-Cu alloys tended to increase as the concentration of copper increased. The feed force for Ti-10%Cu was more than twice as large as that for titanium under both cutting conditions. Alloying with copper reduced the machinability of titanium under the present cutting conditions. The adverse effect on the cutting force was attributed to the higher degree of tensile strength and hardness of the Ti-Cu alloys than of titanium.

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“…According to the Ti-Cu phase diagram, the stoichiometric composition closest to Ti 2 Cu will form only after 50 wt.% Ti leaves Ti 2 Cu alloy by reaction (1). The stoichiometric composition of Ti 2 Cu 3 will form only after additional 16.7 wt.% Ti leaves the alloy by reaction (2). The stoichiometric composition of TiCu 3 will further form after additional 16.7 wt.% Ti leaves the alloy by reaction (3).…”

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confidence: 99%

Phase transformations in Ti2Cu under destructive hydrogenation and recombination

Bratanich

Скороход

Kucheryavyi

et al. 2010

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The thermodynamic possibility and conditions of Ti 2 Cu hydrogenation and recombination are assessed. The mechanism of Ti 2 Cu interaction with hydrogen between 293 and 973 K at pressure 1.0 MPa is studied. The interaction of Ti 2 Cu with hydrogen is thermodynamically possible in the destructive hydrogenation region over a wide temperature range. X-ray diffraction shows that destructive hydrogenation products are titanium dihydride and copper-rich intermetallic phases and copper depending on reaction conditions. According to the established mechanism of Ti 2 Cu destructive hydrogenation, hydrogen selectively interacts with titanium leaving Ti 2 Cu composition as follows: β-TiH y (bct-bcc) → TiH 1.92 (fcc). The initial Ti 2 Cu composition is recombined from destructive hydrogenation products (titanium dihydride and copper) in vacuum and hydrogen. The minimum temperature of Ti 2 Cu vacuum recombination is 1050 K and ensures complete TiH 2 decomposition. The recombination of Ti 2 Cu in hydrogen can occur at temperatures above 907 K.Compounds of titanium with copper are promising functional materials with high hardness, electrical and thermal conductivity, and satisfactory sound absorptivity. Coatings based on Ti-Cu intermetallides can greatly improve the sliding surfaces and tribotechnical properties in general. There are six intermetallic compounds known in the Ti-Cu system: Ti 2 Cu, TiCu, Ti 3 Cu 4 , Ti 2 Cu 3 , TiCu 2 , and β-TiCu 4 [1]. This paper considers the interaction of hydrogen with Ti 2 Cu, which has tetragonal crystal lattice of MoSi 2 type (structural group 17 4h D ) with parameters a = 0.2943 nm and c = 1.0784 nm [2].The interaction between Ti 2 Cu and hydrogen was earlier studied in [3][4][5][6][7], but none of the papers provided diffraction patterns of the reaction products. Nevertheless, it is stated in [3,4] that the reaction products are represented by titanium hydride and copper above 473 K and by direct hydride Ti 2 CuH 2.6 below 473 K [5, 6]. Padurets and colleagues [7] obtained TiCuH 2 and TiH 2 by Ti 2 Cu hydrogenation at 293-673 K and hydrogen pressure 0.1 MPa. The isothermal line of Ti 2 Cu-H equilibrium at 773 and 823 K was also studied [4]. Five pressure plateaus associated with heterophase composition of the system that interacts with hydrogen are revealed. Hence,

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Phase diagram of the system titanium-copper

Cited by 83 publications

References 1 publication

Thermodynamic assessment of the Cu-Ti-Zr system. I. Cu-Ti system

Thermodynamic assessment of the Cu-Ti-Zr system. I. Cu-Ti system

Machinability of Experimental Ti-Cu Alloys

Phase transformations in Ti2Cu under destructive hydrogenation and recombination

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