Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지

Nanocrystallization of Metallic Powders during High Pressure Torsion Processing

금속분말의 고압비틀림 성형시 나노결정화

  • 윤승채 (충남대학교 대학원 나노공학부) ;
  • 김형섭 (충남대학교 나노공학부)
  • Published : 2007.05.10
Download PDF
⟨ Previous Next ⟩

Abstract

Microstructure and hardness of metallic powder of Cu was studied after high pressure torsion (HPT) with 10 torsions and high pressure of 6 GPa. The size Cu grain decreases drastically after HPT and reaches the nano size range. During HPT, Cu powder increases hardness and Hall-Petch hardening, due to the decreasing grain size. In this study, effect of HPT on the hardness of Cu powders and consolidation with Nanocrystalline of the work reported here. The results indicated that Cu powder has a beneficial effect on homogeneous deformation, reducing grain size.

Keywords