Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Change in Microstructure and Mechanical Properties of Deoxidized Low-Phosphorous Copper Processed by Accumulative Roll-Bonding with Annealing

ARB가공된 인탈산동의 어닐링에 따른 미세조직 및 기계적 특성 변화

  • Lee, Seong-Hee (Department of Advanced Materials Science and Engineering, Mokpo National University) ;
  • Kim, Chun-Su (Department of Advanced Materials Science and Engineering, Mokpo National University) ;
  • Kim, Sang-Shik (Division of Materials Science and Engineering, Engineering Research Institute, Gyeongsang National University) ;
  • Han, Seung-Zeon (Department of Materials Technology, Korea Institute of Machinery and Materials) ;
  • Lim, Cha-Yong (Department of Materials Technology, Korea Institute of Machinery and Materials)
  • 이성희 (목포대학교 신소재공학과) ;
  • 김춘수 (목포대학교 신소재공학과) ;
  • 김상식 (경상대학교 나노신소재공학부) ;
  • 한승전 (한국기계연구원 재료연구부) ;
  • 임차용 (한국기계연구원 재료연구부)
  • Published : 2007.07.27
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Abstract

A deoxidized low-phosphorous copper processed by eight cycles of accumulative roll-bonding (ARB) was annealed at various temperatures ranging from 100 to $400^{\circ}C$. The annealed copper was characterized by transmission electron microscopy (TEM) and tensile & hardness test. TEM observation revealed that the ultrafine grains developed by the ARB still remained up to $350^{\circ}C$, however above $400^{\circ}C$ they were replaced by equiaxed and coarse grains due to an occurrence of the static recrystallization. The hardness of the copper decreased slightly with the annealing temperature up to $350^{\circ}C$, however they dropped largely above $400^{\circ}C$. Annealing characteristics of the copper were compared with those of an oxygen free copper processed by ARB and subsequently annealed.

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