PHASE RECRYSTALLIZATION OF TITANIUM AND ITS ALLOYS DURING RAPID HEATING

A theory for concentration inhomogeneities in solid solutions has been presented. This theory provides a physical explanation for the phase recrystallization of titanium and its alloys, and also provides a bett er understanding of its behavior during rapid heating. It is during ra pid heating that a fine grain structure forms in the alloy which has b een strengthened by the highly dispersed phase. The basis of this theo ry is the formation of a crystallographic concentration gradient of th e secondary components and of the internal defects along the crystallo graphic direction of the solid solution.