Texture, Microstructure and Mechanical Properties of 6111 Aluminum Alloy Subject to Rolling Deformation

Lixin Zhang,Song Ni,Xiaohui Yang,Min Song,Kai Li,Yihan Wang,Yong Du

doi:10.1590/1980-5373-mr-2017-0549

Abstract

The mechanical properties, texture and microstructural evolution of a 6111 aluminum alloy during hot rolling and cold rolling deformation were systematically investigated in this article. The results show that cold rolling and hot rolling have significant effects on the tensile behaviors of the alloy. The shear texture and recrystallization texture mainly formed during the hot rolling deformation process, while the rolling texture mainly formed during the cold rolling deformation. The grain refinement mechanisms depend significantly on the rolling process. Movement of shear zone and recrystallization are the main grain refinement mechanisms during the hot rolling process, while dislocations tangling is the main grain refinement mechanism during the cold rolling process. The recrystallization textures and shear textures affect the anisotropy in elongation but the rolling textures affect significantly the anisotropy in yield strength.

Highlights

Aluminum alloys have been widely used in aviation, medical and automobile industries due to their high strength to weight ratio, excellent corrosion and fatigue resistances, and good forming properties[1,2,3,4,5]
In order to clearly see the changes of anisotropy in mechanical properties during hot rolling and cold rolling deformation, the yield strength and Δσ (The difference between the maximum yield stress and the minimum yield stress) of samples were listed in table 4
This article conducted a detailed study of the mechanical properties, texture and microstructural evolution of a 6111 aluminum alloy subject to rolling deformation, with the following conclusions be drawn: (1) During the hot rolling deformation, the main textures are shear texture and recrystallization texture

Summary

Introduction

Aluminum alloys have been widely used in aviation, medical and automobile industries due to their high strength to weight ratio, excellent corrosion and fatigue resistances, and good forming properties[1,2,3,4,5]. An ingot sheet will be deformed to the final shape and size, accompanied by the generation of textures. Plastic deformation, such as rolling, extrusion and drawing, will form a strong texture, at room temperature[8,9,10,11,12]. The different textures correspond to specific Euler angles (φ1, φ, φ2) in ODF.

Results

Discussion

Conclusion