Journal of Ultrafine Grained and Nanostructured Materials

Journal of Ultrafine Grained and Nanostructured Materials

Non-uniform simple shear extrusion (NUSSE) technique as a novel sever plastic deformation technique

Document Type : Research Paper

Authors
Ali Izi
Mohammad Honarpisheh
Farshid Ahmadi
Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran
10.22059/jufgnsm.2024.01.02
Abstract
In this research, a new technique for severe plastic deformation (SPD) was proposed, entitled as non-uniform simple shear extrusion (NUSSE). The larger strains can be obtained in the non-uniform simple shear extrusion (NUSSE) method without repetition of the process. But, in pure shear extrusion (PSE) and simple shear extrusion (SSE) processes, to achieve larger strains, it is necessary to repeat the processes. In this study, the technique was investigated experimentally and numerically using ABAQUS software. The maximum plastic strain, inhomogeneity in deformation, filling fraction and micro-hardness parameters were researched after NUSSE process. Also, the obtained results were compared to the SSE and PSE processes. After this technique, due to the specific design of deformation channel, filling fraction was increased by about 44.92% and 41.84% in comparison with SSE and PSE processes, respectively. Also, the micro-hardness was significantly increased compared to annealing process.
Keywords
Sever plastic deformation
Non-Uniform Simple Shear Extrusion
Filling fraction
Inhomogeneity in deformation
Micro-hardness
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Journal of Ultrafine Grained and Nanostructured Materials
Volume 57, Issue 1
June 2024
Pages 9-18

  • Receive Date 30 December 2023
  • Revise Date 06 June 2024
  • Accept Date 08 June 2024