Solidification of Ingots: Dendritic Structure and Mushy Zone

To prevent interdendritic shrinkage cavities from forming.

Mushy or pasty zone.

By preventing dendric formation, resulting in a fine-grained and equiaxed structure.

<p>Melted-off dendritic side-arms.</p> Signup and view all the answers

<p>Because it is stronger and more ductile.</p> Signup and view all the answers

<p>Low pouring temperature, moulds of low thermal conductivity, and the presence of alloying elements.</p> Signup and view all the answers

<p>Commercially pure metals contain impurities that change the characteristics of solidification from pure-metal to alloy behavior.</p> Signup and view all the answers

<p>The concentration gradient ∆C ceases to fall, and the diffusion of carbon ceases.</p> Signup and view all the answers

<p>The difference in solubility of a solute in two immiscible or slightly miscible phases that are in equilibrium or in contact with each other.</p> Signup and view all the answers

<p>The solidification temperature of the melt changes, becoming lower at the interface where the concentration of carbon is high, and higher at the core of the liquid where the concentration of carbon is lower.</p> Signup and view all the answers

<p>The compositional change, specifically the enrichment of the liquid with the low-melting-point element B, which lowers the melting point.</p> Signup and view all the answers

<p>A changing solidification temperature from the solid-liquid interface to the core of the liquid.</p> Signup and view all the answers