Nano Severe Plastic Deformation (NSPD) is a representative method for manufacturing a nanocrystalline metals by applying ultra-high plastic strain.
The improvement of hardness and yield stress can be investigated using SPD process, and the superplastic behavior of these materials behaves at lower temperatures with higher strain rates.
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2. H.S.Kim, Finite element analysis of high pressure torsion processing, J. Mater. Proc. Tech. 113 (2001) 617-621.
3. D.J.Lee, E.Y.Yoon, D-H.Ahn, B.H.Park, H.W.Park, L.J.Park, Y.Estrin, H.S.Kim, Dislocation density-based finite element analysis of large strain deformation behavior of copper under high-pressure torsion, Acta Materialia 76 (2014) 281–293.
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5. Hak Hyeon Lee, Jae Ik Yoon, Hyung Keun Park, Hyoung Seop Kim, Unique microstructure and simultaneous enhancements of strength and ductility in gradient-microstructured Cu sheet produced by single-roll angular-rolling, Acta Materialia 166 (2019) 638-649.