Twist Channel Multi-Angular Pressing (TCMAP) as a method for increasing the efficiency of SPD

6th International Conference on Nanomaterials by Severe Plastic Deformation

材料科学;化学

Kocich, R.^1,2 ; Kunická, L.^1,2 ; Macháková, A.^2,3

Department of Material Forming, Faculty of Metallurgy and Materials Engineering, VŠB TU, Ostrava 17.listopadu 15, 70833 Ostrava-Poruba, Czech Republic^1

Regional Materials Science and Technology Centre, VB-TU Ostrava, 17. listopadu 15, Ostrava-Poruba 70833, Czech Republic^2

Department of Thermal Engineering, Faculty of Metallurgy and Materials Engineering, VB TU Ostrava, I7.listopadu 15, 70833 Ostrava-Poruba, Czech Republic^3

关键词: Angular pressing;    Bulk materials;    Commercially pure Al;    Deformation parameter;    Experimental verification;    Imposed strains;    Microhardness tests;    Single pass;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/63/1/012006/pdf
DOI  :  10.1088/1757-899X/63/1/012006

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The paper proposes a new variation of the application of SPD methods. For the suggested TCMAP (twist channel multi angular pressing) technology a larger strain is imposed more effectively while homogeneity of material is increased. The number of passes needed to obtain the ultra-fine to nano-scale grains in bulk materials can be significantly reduced. Commercially pure Al (99.97%) was used for the experimental verification of the suggested process. The deformation parameters of the process were also described using a numerical simulation based on a FE analysis. The predicted value of imposed strain after a single pass reached approximately 2.7. Deformation homogeneity was confirmed by micro-hardness tests. Due to the designed shape of the channel both ends of the processed sample are defined by a higher imposed strain and vertical faces.