Progress in rolling and recrystallization textures of tantalum

The refractory tantalum as one of the expensive rare metals has good chemical erosion resistant, ductility and low electron mobility, widely used in severe conditions where specific performances are required. Recently, processing techniques of tantalum have been developed to improve its property. However, the preferred orientation of the grains during processing causes texture to influence the performance of tantalum products, such as strong {111} texture improves capacity of deep-drawing plates, while sputtering usually requests uniform textures. Moreover, rolling and recrystallized annealing are the two primary methods to change the anisotropy of crystals materials. During the rolling process, activation of different slip systems and rotation of grains form various rolling textures, while nucleation and growth of grains with particular orientations generate recrystallization textures. Studies on the texture of metal have been widely conducted in the world. However, these studies mainly concentrated on steels and face centered cubic crystal materials, the textures of rare precious metals like tantalum are rarely concerned. Therefore, this work reviews the evolution rule of texture in tantalum during cold rolling and recrystallization, and then put emphasis on the research status and its new development. © 2016, Materials Review Magazine. All right reserved.