Abstract
Nowadays, there is a considerable scientific interest in bulk ultrafine grained materials, due to their potential for superior mechanical properties. One of the possible formation methods of nano-grained materials is cryogenic rolling. The influence of rolling at cryogenic temperatures has been investigated. Significant differences in the textures and the microstructures can be observed between the cryogenically rolled copper and conventionally cold rolled copper, reduced to the same thickness.
Highlights
Nowadays, there is a considerable interest in the deformation of metals at very low absolute temperatures, which is known as cryogenic deformation [1]
It is assumed that rolling at cryogenic temperature can result in enhanced grain refinement and associated strengthening when compared to rolling at room temperature (RT) [2]
In the present work the aim is to get a better understanding of the texture development in the cryogenic rolling process of pure copper
Summary
There is a considerable interest in the deformation of metals at very low absolute temperatures, which is known as cryogenic deformation [1]. It is believed that very low temperatures suppress the processes of dynamic recovery, promote an increase in the dislocation density, activate mechanical twinning [3, 4] and thereby promote the formation of extremely fine-grained structures. Another potential of cryogenic rolling is the formation of a very weak, almost random texture after annealing in Cu and Al alloys [5, 6]. The texture and microstructures of cold rolled and cryogenic rolled material, starting from an identical batch of pure copper, is studied in detail. Textures are calculated without imposed orthorhombic symmetry
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