3.05 - Development of Microstructures and Textures by Cross Rolling

Abstract

Change in strain path offers an additional parameter during the processing of materials to alter the microstructure and crystallographic texture, and thereby the mechanical properties of the end product. Conventionally, rolling has been widely used to produce flat products from variety of metals and alloys for different applications. Therefore, effect of strain path change in an industrially relevant process like rolling is of paramount importance from technological perspective. The effect of strain path change during rolling on the evolution of microstructure and crystallographic texture has been reviewed for important face center cubic, body center cubic, and hexagonal close pack engineering metals and alloys. A brief overview of evolution of microstructure and crystallographic texture for conventional rolling or plane strain deformation is discussed. This is followed with existing results on microstructure and texture evolution for different strain paths in rolling like multistep cross rolling, two-step cross rolling, pseudo-cross rolling, and reverse rolling. The results obtained for various strain paths are compared and contrasted with respect to conventional rolling. A brief insight into the mechanics involved in different modes of rolling is presented along with crystal plasticity simulations. Finally, the technological importance of the process is presented with some real applications in manufacturing.