Victoria M. Miller
University of California, Santa Barbara

Texture Modification During Thermomechanical Processing of Binary Mg-Zn Alloys

Location: EB1 Room 1011

Friday, January 15th 2016 - 11:00 am

Control of crystallographic texture during thermomechanical processing is critical to the development of magnesium alloy sheet with desired levels of strength, ductility, and formability. The texture modification mechanisms available in conventional alloys and their effects on formability are poorly understood. In this work, the texture evolution of binary Mg-Zn alloys with varied Zn concentration above the solubility limit are examined during warm rolling and subsequent static recrystallization via electron backscatter diffraction. During deformation, it is observed that grain orientations with basal poles tilted toward the transverse direction are increasingly stabilized during rolling with increasing Zn alloy content. During subsequent recrystallization, it is observed that increasing recrystallization temperature results in weaker basal texture character and greater retained fraction of orientations with basal poles tilted toward the transverse direction. Mechanisms of texture weakening are investigated. This work demonstrates that opportunities for texture modification are present both during deformation and subsequent static recrystallization, even in conventional magnesium alloys.

North Carolina State University