داستان آبیدیک

thermal gradient


فارسی

1 متالوژی:: گرادیان دمایی

The process calls for the transition from the liquid to the solid phase according to a controlled thermal gradient to produce elongation of the grains in the direction parallel to the temperature variation. Thus, to obtain elongated grains along the principal stress axis, the thermal gradients are aligned parallel to it. The grains then proceed to form, aligning themselves with the direction parallel to the thermal gradient to create a columnar array. Thermal gradient is controlled with a baffle plate at the base of the furnace. This can alter the nec- essary thermal gradients in the mushy zone, and restricts the directional solidification to pro- ceed in an orderly manner.

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