HIGH TEMPERATURE DIRECTIONALLY SOLIDIFIED AND SINGLE CRYSTAL DIE CASTING

摘要

A high-temperature die casting die includes a first die plate with a first recess and a second die plate with a second recess, the first and second recesses defining a main part cavity and gating. A grain selector is in fluid communication with the main cavity, and an in situ zone refining apparatus is adapted to apply a localized thermal gradient to at least one of the first and second die plates. The localized thermal gradient and the at least one die plate are movable relative to each other so as to apply the localized thermal gradient along a first direction extending from the grain selector longitudinally across the main part cavity.

主权项

1. A high-temperature die casting apparatus comprising:
a die casting die having a recess for solidifying a casting, the recess including gating in fluid communication with a main cavity; and a chiller adaptable to directionally apply a localized thermal gradient to the die casting die from a first end to a second end; wherein the localized thermal gradient induces a movable solidification front in a metal disposed in the main cavity such that a portion of the metal above the solidification front remains above a γ/γ solvus temperature of the metal as the localized thermal gradient is directionally applied.