Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Effect of Equal Channel Angular Pressing Temperature on the Fracture and Mechanical Properties of Magnesium

마그네슘의 등통로각압축 시 파괴 및 기계적 특성에 미치는 공정온도 효과

  • 윤승채 (충남대학교 대학원 나노소재공학과) ;
  • 복천희 (충남대학교 대학원 나노소재공학과) ;
  • 곽은정 (충남대학교 대학원 나노소재공학과) ;
  • 정영기 (한국 생산기술연구원) ;
  • 김택수 (한국 생산기술연구원) ;
  • 김형섭 (충남대학교 대학원 나노소재공학과)
  • Published : 2008.02.01
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Abstract

Mg and Mg alloys are promising materials for light weight high strength applications. In this paper, grain refinement of pure Mg using severe plastic deformation was tried to enhance the mechanical properties of the hard-to-deform metallic material. The microstructure and the mechanical properties of Mg processed by equal channel angular pressing(ECAP) at various processing temperatures were investigated experimentally. ECAP with channel angle of $90^{\circ}$ and corner angle of $0^{\circ}$ was successful at $300^{\circ}C$ without fracture of the samples during the processing. The hardness of the ECAP processed Mg decreased with increasing ECAP processing temperature. The effect of temperature on the hardness and microstructure of the ECAP processed Mg were explained by the dislocation glide in the basal plane and non-basal slip systems and by the dynamic recrystallization and recovery.

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References

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