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The Al–Be system is investigated via three steps. In the first step, all of the experimentally measured phase diagram and thermodynamic data available in the literature are critically reviewed. On the basis of the assessed phase diagram, in the second step, eight decisive samples are prepared by arc melting of Al and Be pieces and annealing at 600 ∘ C for eight days. Water-quenched samples...
The Co–Si system is investigated via experiment and modeling. Based on the critical evaluation of the phase diagram data available in the literature, one key Co/Si diffusion couple and eight decisive alloys are prepared. The diffusion couple, which is annealed at 1323.15 K for 8 days, is first examined by scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDX), and then by electron...
The V–Si system is reassessed based on a critical literature review involving recently reported data and the present experimental data. These new data include the thermodynamic stability of V 6 Si 5 and the enthalpies of formation for the compounds calculated by first-principles method. Two alloys were prepared in the region of (Si)+V Si 2 and annealed at 1273 K for 14 days...
Alloys with nominal composition Nb(Ni 1−x Al x ) 2 (x Al =0.15, 0.23, 0.30, 0.38, 0.46, 0.54, 0.62, 0.69, 0.77, 0.85) were investigated by means of X-ray powder and single crystal diffraction, optical microscopy, electron probe microanalysis (EPMA) concentrating on structural details of the C14 MgZn 2 -type Laves phase. Rietveld refinements of X-ray powder...
The ternary Pr–Au–Sn isothermal section at 600 ∘ C has been investigated by X-ray diffraction, optical and scanning electron microscopy and electron probe microanalysis. The ten new ternary phases τ 1 PrAu 2−x Sn x , τ 2 Pr 61 Au 25 Sn 14 , τ 3 PrAu 6−x Sn x , τ 4 Pr 4 Au 11 Sn ...
A thermodynamic description for the TiO 2 –Y 2 O 3 system is performed by considering reliable literature data and newly measured phase equilibria. Using X-ray diffraction, the phase composition range and the decomposition temperature of fluorite are detected. The present description of the TiO 2 –Y 2 O 3 system yields a set of critical thermodynamic...
The isothermal section of the Pr–Pt–Co ternary system at 500 ∘ C has been determined in this study by X-ray diffraction, scanning electron microscopy and energy dispersion spectroscopy techniques. This isothermal cross-section consists of 20 single-phase regions (including solid solution regions of the binary compounds), 37 two-phase regions and 18 three-phase regions. The maximum solid solubility...
The isothermal section of the Cu–Si–Zn ternary system at 600 °C was experimentally determined with fifteen alloys by means of optical microscopy, X-ray diffraction, and the scanning electron microscopy with energy dispersive X-ray spectroscopy. At 600 °C, no ternary compounds were observed, and five three-phase equilibria were well determined. In particular, the longstanding controversy regarding...
The phase equilibria of the binary Gd–Ti system were studied by combining electrostatic levitation of the melt with high energy synchrotron in situ X-ray diffraction at elevated temperatures. The coexistence of the phases including the liquid was directly proven in the temperature range between T=1000 and 1920K. The Gd–Ti system is of monotectic type characterized by a miscibility gap in the liquid...
Both experimental investigation and thermodynamic modeling were performed for the Mg–Mn–Sr system. Four decisive alloys were selected and prepared using a powder metallurgy method to measure the isothermal section at 500°C via a combination of X-ray diffraction (XRD) and electron probe microanalysis (EPMA). No ternary compound has been observed for this ternary system. Four three-phase regions, (Mg)+(αMn)+Mg...
The 600 °C and 450 °C isothermal sections of the Co-Cu-Zn ternary system have been investigated experimentally by means of scanning electron microscopy coupled with energy dispersive x-ray spectroscopy, and x-ray diffraction. Five three-phase regions were confirmed in the 600 °C isothermal section and six three-phase regions existed in the system at 450 °C. The γ-Co5Zn21 and Γ-Cu5Zn8 phases formed...
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