Texture Evolution of Hot-Rolled, Near-α-Based Titanium Matrix Composites

Abstract

Titanium matrix composites (TMCs) are rolled by 40 pct and 95 pct reductions without changing rolling directions at the temperature of 1283 K (1010 °C). The texture is identified by X-ray diffraction (XRD). The microstructure is examined by transmission electron microscopy (TEM), and the TiB whiskers orientation is shown by optical microscopy (OM). The results show that in the 40 pct hot-rolled TMCs, the rolling texture is the main components; however, in the 95 pct hot-rolled TMCs, the recrystallization texture becomes the major components. Because of the special orientation relationships $$ ( {[ {11\bar{2}0} ]_{\text{Ti}} |\,|[ {010} ]_{\text{TiB}} } ) $$ between the TiB whiskers and matrix alloy, the intensity of the $$ [ {11\bar{2}0} ] $$ fiber is greater in the 95 pct hot-rolled TMCs than that in the 40 pct hot-rolled TMCs.