Microstructure- and Texture Design of Nonferrous Metals

Mechanical properties and the formability of metallic materials are influenced by the alloy composition but also significantly by microstructure and texture. Therefore, design of these properties in order to optimize the formability already starts during the solidification. Nevertheless, variation of deformation and heat treatment parameters is what exerts the strongest effect on the final microstructure and texture.

Plastic deformation comprising shear leads to an increase of certain texture components (S, rot. Cube) which differ from texture components generated by plane-strain deformation (Goss) or recrystallization (Cube). Modern analysis methods such as scanning electron microscopy in combination with electron backscatter diffraction as well as correlative methods like X-ray diffraction allow a determination and quantification of the present texture components. This enables interpretation of the deformation history and an estimation of the suitability for deep-drawing or bending operations and furthermore is the basis for the development of advanced Al-alloys.