Investigation of microstructure and mechanical properties of Cu/ZnO nano composite produced by ARB process

6th International Conference on Nanomaterials by Severe Plastic Deformation

材料科学;化学

Shahhoseyni, M.^1 ; Qods, F.^1

Faculty of Materials Science and Engineering, Semnan University, Semnan, Iran^1

关键词: Fracture mechanisms;    Fracture surfaces;    Microhardness tests;    Microstructure and mechanical properties;    Nano-reinforcements;    Nano-ZnO;    Structural integration;    Ultimate strength;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/63/1/012104/pdf
DOI  :  10.1088/1757-899X/63/1/012104

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this study, ARB process was used to produce Cu/Nano ZnO composite and samples were subjected up to six ARB cycles. Microstructural and mechanical properties of the composite within different ARB cycles were investigated by scanning electron microscopy (SEM) and tensile and micro hardness tests. The results showed that increasing the number of cycles, not only helped the distribution of reinforcing Nano-reinforcement in the matrix, but also improved the initial bonding strength, so that at final cycles, structural integration was achieved. Mechanical experiments also showed that increasing the number of ARB cycles, increased yield and ultimate strengths as well as micro hardness. However, elongation decreased up to second cycle and then increased by later final cycles. SEM studies of the fracture surfaces after the tensile test showed that the fracture mechanism of the composite was shear ductile rupture.