Effect of SPD on the structure formation and mechanical properties of the Cu-10% Zn alloy

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

Zaynullina, L.I.^1,2 ; Sitdikov, V.D.^1,3 ; Alexandrov, I.V.^1,2 ; Wei, W.^2,4

Ufa State Aviation Technical University, 12 K. Marx st., Ufa

450008, Russia^1

Sino-Russian Joint Laboratory of Functional Nanostructured Materials, Changzhou University, Changzhou, Jiangsu

213164, China^2

Laboratory for Mechanics of Bulk Nanomaterials, Saint Petersburg State University, 28 Universitetskiy pr., St. Petersburg, Peterhof

198504, Russia^3

School of Materials Science and Engineering, Changzhou University, Changzhou, Jiangsu

213164, China^4

关键词: Degree of reduction;    Dislocation densities;    High angle grain boundaries;    Microstructure characteristics;    Strength characteristics;    Structure formations;    Subgrain structures;    Ultrafine grained structure;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/447/1/012041/pdf
DOI  :  10.1088/1757-899X/447/1/012041

来源: IOP

【 摘 要 】

In this paper, we report on the microstructure characteristics and strength properties of the Cu-10 wt.% Zn alloy subjected to equal-channel angular pressing (ECAP) and subsequent flat rolling (FR), in order to form an ultrafine-grained (UFG) structure and enhance the strength properties. It is shown that the formed subgrain structure increases the strength characteristics. An increase in the degree of reduction at FR resulted in an increase in the dislocation density and also in an increase in strength. The presence of high-angle grain boundaries increases the ductility of the alloy.