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

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 g...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2014-08, Vol.63 (1), p.12006
Main Authors: Kocich, R, Kunčická, L, Macháčková, A
Format: Article
Language:English
Subjects:
Angular pressing
Deformation
Hardness tests
Homogeneity
Microhardness
Process parameters
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Summary: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.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/63/1/012006