Cold compression behavior on the evolution of microstructure and texture in Beta C titanium alloy

Abstract

A single-phase Beta-C titanium alloy was subjected to uniaxial compression (up to 75% height reduction) in a universal tensile testing machine at room temperature. The evolution of microstructure during uniaxial cold compression was studied using optical microscopy, scanning electron microscopy, and electron backscattered diffraction, while, bulk crystallographic texture analysis was measured using X-ray diffraction. Evolution of deformation texture during cold compression was simulated using mean-field Taylor models. The deformed microstructure (after 30% compression) showed pronounced shear bands, particularly in compression direction, CD//< 111 >oriented grains. The dominant crystallographic texture components developed during compression were CD//< 100 >fiber and CD//< 111 >fiber. A gradual change in texture was observed with increasing compression. Full constraint Taylor model showed a reasonably good match between simulated and experimental texture.