The Effect of Low Deformation Asymmetric Rolling on Microstructure and Texture of the Polycrystalline Copper

• Published in: Archives of metallurgy and materials Vol. 61; no. 4; pp. 2183 - 2188
• Main Authors: Uniwersał, A., Wróbel, M., Wroński, S., Kalemba-Rec, I., Wroński, M., Wierzbanowski, K., Baczmański, A., Bacroix, B.
• Format: Journal Article
• Language: English
• Published: Warsaw De Gruyter Open 01.12.2016; Polish Academy of Sciences
• Subjects: Asymmetric rolling; Asymmetry; Cold rolling; Computer science; Copper; Crystallography; Deformation; Deformation effects; Grain refinement; Grain size; Microstructure; microstructure refinement; Parameter modification; polycrystalline copper; Polycrystals; strip curvature; Texture; Thickness; Titanium alloys
• ISSN: 2300-1909; 1733-3490; 2300-1909
• DOI: 10.1515/amm-2016-0348

In the most recent years the asymmetric rolling (AR) attracts attention of researchers and technologists. This process can improve some technological parameters ( . modification of rolling torque and load, power requirements, etc.) as well as provide the possibility of grain refinement in a relatively inexpensive way. Most of the reports concerning microstructural changes produced by refer to high deformations imposed in highly asymmetric conditions. However, such rolling conditions are difficult to control, so there are no prospects to their quick industrial implementation. The present paper refers to relatively low deformation and low asymmetry rate, that is much more interesting for the industry. It was shown that bending of the rolled band (important disadvantage of the technology) can be controlled by adjusting of the amount of deformation and asymmetry. It was also shown that ca. 30% reduction in thickness during cold rolling, together with a relatively low asymmetry, reduces significantly the grain size and produces a more fragmented microstructure inside grains of the polycrystalline copper comparing to the symmetric rolling ( ). The material hardness after AR is higher than after the . Moreover, the crystallographic texture asymmetry, expressed by its rotation around the transverse direction, is observed in the material.