1976
DOI: 10.1143/jjap.15.777
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Solid Solubility of Si in Al under High Pressure

Abstract: By making use of a 15 mm cubic anvil apparatus, Al–Si alloys of Si-concentration up to 15 at% were studied at a pressure of 54 kbar. The liquidus, solidus and solvus of the Al-rich alloys were determined by means of the 4-probe electric resistance measurement. The solubility limit of Si in Al was extended beyond 15 at% at 54 kbar in comparison with 1.59 at% at 0 kbar. The resistivity of the alloy was increased by a solution of Si with a gradient of 0.5 µΩcm/at% up to 15 at%Si. The alloy quenched under high pre… Show more

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Cited by 68 publications
(12 citation statements)
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“…According to the analysis of the barothermal cooling curve for Al-12Si, eutectic crystallization begins at 578°C, which coincides with the eutectic temperature of the alloy at atmospheric pressure. Note that the pressure coefficients for the melting points of pure Al were reported to be 5.6°C/100 MPa [7,8] and 6.5°C/100 MPa [14], whereas the eutectic melting point of both alloys in argon compressed to 100 MPa increases at heating with a pressure coefficient of 3-4°C/ 100 MPa. A significant distinction of the data obtained after a DBA cycle from canonical data is the solid-state precipitation of silicon particles at 553°C, which is of obvious interest for practical applications in barothermal processing of silumins.…”
Section: Methodsmentioning
confidence: 99%
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“…According to the analysis of the barothermal cooling curve for Al-12Si, eutectic crystallization begins at 578°C, which coincides with the eutectic temperature of the alloy at atmospheric pressure. Note that the pressure coefficients for the melting points of pure Al were reported to be 5.6°C/100 MPa [7,8] and 6.5°C/100 MPa [14], whereas the eutectic melting point of both alloys in argon compressed to 100 MPa increases at heating with a pressure coefficient of 3-4°C/ 100 MPa. A significant distinction of the data obtained after a DBA cycle from canonical data is the solid-state precipitation of silicon particles at 553°C, which is of obvious interest for practical applications in barothermal processing of silumins.…”
Section: Methodsmentioning
confidence: 99%
“…A theoretical analysis of the pressure-induced characteristic temperatures shift for complexly doped alloys presents serious difficulties, so experimental work in this direction is of considerable current interest and importance. The first studies concerned with high-pressure phase diagrams of the binary Al-Si system were carried out by Fujishiro et al [7] and Mii et al [8], who investigated a number of compositions in the concentration range of 0-15 at.% Si at two fixed pressures, 5.46 GPa [7] and 2.5 GPa [8], and they obtained the liquidus, solidus, and solvus curves by electrical resistance measurements to detect phase transformations. Pressure was applied using an anvil system at a small sample volume.…”
Section: Introductionmentioning
confidence: 99%
“…The presence of high pressure can effectively broaden the phase space where traditional metallurgy and melt-growth fail, thus beneficial to increase the solubility. It was confirmed that high pressure can increase the solid solubility of solute in the solid solution [36]. In addition, high pressure can induce plastic deformation and promote the formation of dislocations [37].…”
Section: Introductionmentioning
confidence: 90%
“…18. The pertinent experimental results 68,69) are plotted with the phase diagram at 2.8 GPa (solid curve) and 5.4 GPa (dashed curve). Here, the solidus and liquidus curves of the phase diagram at 5.4 GPa are somewhat higher than the experimental values because the pressure affection to the electromotive force (EMF) of thermocouple, according to Mii et al, 68) was not considered owing to the difficulty of making exact corrections.…”
Section: Aluminumsilicon Binary Systemmentioning
confidence: 99%