Evaluation of the excess volume and density of liquid Al –Sr alloys
-
Zhonghua Zhang
,
Xiufang Bian
Abstract
The excess volume and density of liquid Al –Sr alloys at 1323, 1423 and 1523 K have been evaluated from the enthalpy of mixing and the excess entropy, using the solution model based on the free-volume theory. It has been found that the excess volume of liquid Al –Sr alloys exhibits a minimum at xSr ≈ 0.31, well consistent with the thermodynamic results that both the enthalpy of mixing and excess entropy exhibit minima at xSr ≈ 0.35. By contrast, the density of liquid alloys shows a maximum at xSr ≈ 0.31. The excess volume and density, in combination with the thermodynamic properties and the phase diagram, suggest the presence of complexes of the type Al2Sr in liquid Al –Sr alloys. The excess volume and the density of liquid alloys slightly decrease with increasing temperature.
The authors gratefully acknowledge the support of the National Natural Science Foundation of China (No. 50071028) and the Shandong Natural Science Foundation of China (No. Z2001F02).
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© 2002 Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Editorial
- 2nd European Symposium on Nanomechanical Testing
- Articles/Aufsätze
- Finite element simulation of spherical indentation in the elastic –plastic transition
- Continuous FEM simulation of the nanoindentation
- Extracting hardness and Young’s modulus from load – displacement curves
- Nanoindentation around Vickers microindentation in MgO (100) crystal
- Development of a standard on hardness and Young’s modulus testing of thin coatings by nanoindentation
- Phase formation and reaction kinetics in M– In systems (M = Pt, Pd, Mn)
- Phase formation and reaction kinetics in M–Sn systems (M = Zr, Hf, Nb, Ta, Mo)
- Evaluation of the excess volume and density of liquid Al –Sr alloys
- Strength differential effect in SiCp reinforced Al composites
- Processing map for hot working of hot-rolled Mg-11.5Li-1.5Al-0.15Zr alloy
- Effect of modes of rolling on evolution of the texture in pure copper and some copper-base alloys
- Effect of modes of rolling on evolution of the texture in pure copper and some copper-base alloys
- Notifications/Mitteilungen
- Personal/Personelles
- DGM Training/DGM Fortbildung
- Conferences/Konferenzen
Artikel in diesem Heft
- Contents
- Editorial
- 2nd European Symposium on Nanomechanical Testing
- Articles/Aufsätze
- Finite element simulation of spherical indentation in the elastic –plastic transition
- Continuous FEM simulation of the nanoindentation
- Extracting hardness and Young’s modulus from load – displacement curves
- Nanoindentation around Vickers microindentation in MgO (100) crystal
- Development of a standard on hardness and Young’s modulus testing of thin coatings by nanoindentation
- Phase formation and reaction kinetics in M– In systems (M = Pt, Pd, Mn)
- Phase formation and reaction kinetics in M–Sn systems (M = Zr, Hf, Nb, Ta, Mo)
- Evaluation of the excess volume and density of liquid Al –Sr alloys
- Strength differential effect in SiCp reinforced Al composites
- Processing map for hot working of hot-rolled Mg-11.5Li-1.5Al-0.15Zr alloy
- Effect of modes of rolling on evolution of the texture in pure copper and some copper-base alloys
- Effect of modes of rolling on evolution of the texture in pure copper and some copper-base alloys
- Notifications/Mitteilungen
- Personal/Personelles
- DGM Training/DGM Fortbildung
- Conferences/Konferenzen
