Metallurgical Transactions B
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Dissolution of solid copper cylinder in molten tin-lead alloys under dynamic conditions
Metallurgical Transactions B - Tập 13 - Trang 439-445 - 1982
The dissolution of a copper cylinder in molten tin-lead alloys was studied at 673 K under static and dynamic conditions in the peripheral velocity range 1.9 to 75.4 cm per second using an immersion method. The dissolution rate of copper increased with increasing tin concentration and peripheral velocity. The solution rate constant increased with peripheral velocity and with diffusion coefficient o...... hiện toàn bộ
Coriolis effects on the stability of plane-front solidification of dilute Pb-Sn binary alloys
Metallurgical Transactions B - Tập 23 - Trang 73-80 - 1992
The possibility of using steady uniform rotation about a vertical axis to suppress the onset of buoyancy-driven convection during solidification of a binary alloy is considered using a linear stability analysis. For Pb-Sn alloys, our results clearly show that the onset of convection in a horizontally unbounded layer can be suppressed significantly at modest rotation rates. Specifically, “plane-fro...... hiện toàn bộ
Nitrogen solubility in liquid Fe-V and Fe-Cr-Ni-V alloys
Metallurgical Transactions B - Tập 12 - Trang 333-339 - 1981
Nitrogen solubility in liquid Fe, Fe-V, Fe-Cr-V, Fe-Ni-V and Fe-18 pct Cr-8 pet Ni-V alloys has been measured using the Sieverts’ method for vanadium contents up to 15 wt pct and over the temperature range from 1775 to 2040 K. Nitrogen solution obeyed Sieverts’ law for all alloys investigated. Nitride formation was observed in Fe-13 pet V, Fe-15 pet V and Fe-18 pet Cr-8 pet Ni-10 pet V alloys at l...... hiện toàn bộ
Elaboration of semisolid alloys by means of new electromagnetic rheocasting processes
Metallurgical Transactions B - Tập 23 Số 2 - Trang 189-206 - 1992
Effects of anthracite calcination and formulation variables on properties of bench scale aluminum smelting cell cathodes
Metallurgical Transactions B - Tập 8 - Trang 591-596 - 1977
Several anthracites were calcined at temperatures ranging from about 1100 to 2300°C and bench scale cathodes fabricated, baked, and tested for electrical resistivity and expansion during electrolysis. Cathode electrical resistivity did not decrease much with increasing anthracite calcination temperature to about 1800°C but decreased sharply there-after. Cathode expansion during electrolysis was in...... hiện toàn bộ
Experimental study of continuous electromagnetic casting of aluminum alloys
Metallurgical Transactions B - Tập 16 Số 2 - Trang 377-384 - 1985
The clustering of alumina inclusions
Metallurgical Transactions B - Tập 10 Số 2 - Trang 171-184 - 1979
Kinetics of leaching of zinc ferrite in aqueous hydrochloric acid solutions
Metallurgical Transactions B - Tập 15 - Trang 221-228 - 1984
The dissolution of synthetic samples of zinc ferrite in aqueous hydrochloric acid is stoichiometric. The rate appears to be controlled by a chemical reaction on the solid surface, and dependence of the dissolution rate on hydrochloric acid activity is of the first order. Activation energy of 83 kJ mol-1 was found. Zinc ferrite leaching is a slow solubilization process in the hydrochloric acid trea...... hiện toàn bộ
Mathematical model of the thermal processing of steel ingots: Part II. Stress model
Metallurgical Transactions B - Tập 18 - Trang 131-147 - 1987
A mathematical model has been developed to predict the internal stresses generated in a steel ingot during thermal processing. The thermal history of the ingot has been predicted by a finite-element, heat-flow model, the subject of the first part of this two-part paper, which serves as input to the stress model. The stress model has been formulated for a two-dimensional transverse plane at mid-hei...... hiện toàn bộ
Diffusivities and viscosities of some gases at elevated temperatures: Gas diffusivities in porous solids
Metallurgical Transactions B - Tập 20 - Trang 141-148 - 1989
A diffusion bridge apparatus has been used to measure diffusivities for the gas pairs CO2−N2, CO2−Ar, and CH4−N2 at temperatures ranging from 300 to 1000 K. The apparatus measured effective diffusivities which were transformed into ordinary diffusivities after calibration with a gas pair (CO2−N2) of known diffusivity. The apparatus was also used to measure the viscosities of the four gases over th...... hiện toàn bộ
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