Controlled solidification of a dilute binary alloy: I. Theory
作者： I. Jin , G.R. Purdy
DOI: 10.1016/0022-0248(74)90038-4
关键词: Growth velocity 、 Thermodynamics 、 Temperature gradient 、 Solute diffusion 、 Radius 、 Materials science 、 Dendrite (crystal) 、 Alloy 、 Binary alloy 、 Boundary (topology)
摘要: Abstract A discussion of the steady controlled solidification a dilute binary alloy is presented. solution solute diffusion equation obtained for an infinite paraboloidal dendrite, moving in fixed temperature gradient. The behaviour group dendrites approximately accounted by truncating dendrite at self-consistent boundary limit, and unique front nonplanar interface invoking extremum principle based nonquilibrium thermodynamics. effects varying growth velocity gradient on tip concentration radius are then predicted theoretically; computed numerical results Fe-8wt% Ni
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