Evolution of the structure and properties of pure aluminum under severe plastic deformation

Open School-Conference of NIS Countries Ultrafine Grained and Nanostructured Materials

Rakhadilov, B.K.^1 ; Kylyshkanov, M.K.^1 ; Zhaparova, M.S.^1

S. Amanzholov East Kazakhstan State University, 55 Kazakhstan st., Ust-Kamenogorsk

070004, Kazakhstan^1

关键词: High dispersion;    Pure aluminum;    Severe plastic deformations;    Structural elements;    Structure and properties;    Ultimate tensile strength;    Ultrafine grained structure;    X-ray diffraction studies;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/447/1/012084/pdf
DOI  :  10.1088/1757-899X/447/1/012084

来源: IOP

【 摘 要 】

The influence of severe plastic deformation (SPD) by equal-channel angular pressing (ECAP) on the formation of the structure and the mechanical properties of pure aluminum is studied. It is established that an ultrafine-grained structure is formed with an average size of structural elements of ∼ 1.5 μm. X-ray diffraction studies have shown that SPD results in a broadening of interference lines with a decrease in their intensity, which indicates an increase in the imperfection of the structure and its high dispersion. SPD also results in a significant enhancement of microhardness, yield stress and ultimate tensile strength in aluminum.