H-Ti (Hydrogen-Titanium)

Okamoto, H.

doi:10.1007/s11669-010-9842-1

Cited by 151 publications

(218 citation statements)

References 10 publications

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“…Between 882 8C and 1 608 8C, bcc V and Ti are totally miscible and the solid solution presents a minimum azeotropic melting at 1 608 8C. Murray [14] proposed a diagram characterized by a miscibility gap in the bcc solid solution but Fuming and Flower [15] showed that this was due to the presence of oxygen [16,17]. Table 1 summarizes the literature data concerning the unary and binary phases of the system.…”

Section: Ti-vmentioning

confidence: 99%

Phase equilibria in the Fe–Ti–V system

Massicot

Joubert

Latroche

2010

International Journal of Materials Research

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In order to study the phase diagram of the ternary Fe-Ti-V system, the isothermal sections at 1 000 8C and 1 200 8C have been determined. The nature and composition of the phases involved in the different equilibria were investigated by means of X-ray powder diffraction and electron probe microanalysis. More than 15 at.% Fe could be substituted in the body centered cubic Ti-V solid solution at both temperatures. The C14, Fe 2 Ti-derived phase extends to the composition Ti 33 V 33 Fe 33 . A linear regression between the lattice parameter and the composition of the studied body centered cubic phase is proposed. The data provided by the isothermal sections, together with the differential thermal analysis measurements, highlighted the presence of a quasi-peritectic reaction U, and a tentative liquidus projection is presented, based on a metallographic analysis.

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Section: Ti-vmentioning

confidence: 99%

Phase equilibria in the Fe–Ti–V system

Massicot

Joubert

Latroche

2010

International Journal of Materials Research

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“…19 Champion and Hagege 8,9,20 further confirmed the existence of ZrB with peritectoid reaction by XRD and TEM analysis, and even found that this phase was easily stabilized to room temperature. [12][13][14] As a sound member of ultra-high temperature ceramics (UHTCs) family, this phase has gained much attention in the past few years. 9 (2) ZrB 2 phase.…”

Section: Introductionmentioning

confidence: 99%

Novel metastable compounds in the Zr–B system: an ab initio evolutionary study

Fan

2015

Phys. Chem. Chem. Phys.

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Using ab initio evolutionary simulations, we have explored the potential crystal structures with up to 18 atoms in the unit cell for all possible stoichiometries of the Zr-B system. In addition to the reported ZrB, ZrB2, ZrB12, oP8-ZrB and Zr3B4, two extraordinary Zr2B3 and Zr3B2 have been found to be both mechanically and dynamically stable, as verified by the calculated elastic constants and phonon dispersions. The calculated formation enthalpies reveal that both the new phases may be synthesized and found in experiments. It also reveals that pressure is beneficial for the synthesis of all available phases, except for the ZrB phase. In addition, the values of the Vickers hardness for five Zr-B compounds are predicted utilizing two different models. Contrary to the known hard phases of ZrB2 and ZrB12, the two new compounds both have low values of hardness (less than 10 GPa), which is consistent with their excellent ductility deduced from the bulk and shear moduli. Electronic structure calculations suggest that the new phases are both metallic, while electronic density maps show strong ionic bonding characteristics between the Zr and B atoms. The crystal orbital Hamilton population (COHP) diagrams have also been calculated in order to further analyze the bonding features of the uncovered two novel phases.

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“…Peak II appears in the range of 400-500uC, exhibiting as more or less a deviation from the baseline. According to the binary Mg-Mn phase diagram, 11 a-Mg undergoes a rapid decrease with temperature in this temperature range; an intense precipitation of Mn from the a-Mg solution is reasonably expected during this term. Peak II is therefore deemed to be a sign of releasing heat during the Mn precipitating process.…”

Section: Thermal Analysismentioning

confidence: 93%

“…The maximum solubility of Er in Mg at the eutectic temperature (570uC) is as high as 6?9 at.-%. 11 Previous research has shown that the addition of Er significantly increases the ductility and formability of Mg alloys. 12,13 In addition, it has been proved by thermodynamic calculation and experiments that compared to Er-Mg and Er-Mn compounds, Er-Al compounds have the minimum formation energy, and that Er will preferentially bond with Al to form Al 3 Er phase in the Er-Mg-Mn-Al multicomponent system.…”

Section: Introductionmentioning

confidence: 99%

Grain refinement of as cast Mg–Mn alloy by simultaneous addition of trace Er and Al

Zhang

Fang

Yuan

2012

International Journal of Cast Metals Research

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A novel method for the grain refinement of as cast Mg-1?8Mn alloy by simultaneous addition of trace Er and Al was developed. A series of Mg-Mn alloys with systematic additions of Er alone (Er) or simultaneously with Al (Er/Al) were designed in order to illustrate the effects of Er/Al on the microstructure of the Mg-Mn alloy. The results showed that significant grain refinement was obtained by simultaneous addition of Er/Al. The grain size decreased remarkably from over 800 mm in the unrefined alloy to 150 mm with the addition of 0?4 wt-%Er/Al. Adding Er alone to the Mg-Mn alloy did not evidently influence the grain size. The Al 3 Er phase was identified to be the dominant phase in the Er and Al containing alloys, besides elemental Mn particles. Based on the calculation of the planar disregistry between Al 3 Er and a-Mg, Al 3 Er particles could act as efficient heterogeneous nuclei of primary a-Mg during the solidification of Mg-Mn alloy.

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H-Ti (Hydrogen-Titanium)

Cited by 151 publications

References 10 publications

Phase equilibria in the Fe–Ti–V system

Phase equilibria in the Fe–Ti–V system

Novel metastable compounds in the Zr–B system: an ab initio evolutionary study

Grain refinement of as cast Mg–Mn alloy by simultaneous addition of trace Er and Al

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