EVOLUTION OF TRANSFORMATION TEXTURE IN A METASTABLE B –TITANIUM ALLOY

摘要

Texture evolution in h.c.p. (α) phase derived from aging of a differently processedmetastable b.c.c. (β) titanium alloy was investigated. The study was aimed at examining(i) the effect of different b.c.c. cold rolling textures and (ii) the effect of different defectstructures on the h.c.p transformation texture. The alloy metastable β alloy Ti-10V-4.5Fe-1.5Al was rolled at room temperature by unidirectional (UDR) and multi-step crossrolling (MSCR). A piece of the as-rolled materials were subjected to aging in order toderive the h.c.p. (α) phase. In the other route, the as-rolled materials were recrystallizedand then aged. Textures were measured using X-ray as well as Electron Back ScatterDiffraction.