Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Effect of Annealing on Microstructural and Mechanical Property Variation of the Oxide-Dispersion-Strengthened Cu alloy

산화물 분산강화 동합금의 열처리에 따른 미세조직 및 기계적 특성 변화

  • Kim Yong-Suk (School of Advanced Materials Engineering, Kookmin University)
  • 김용석 (국민대학교 신소재공학부)
  • Published : 2006.01.01
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Abstract

The alumina dispersion-strengthened (DS) C15715 Cu alloy fabricated by a powder metallurgy route was annealed at temperatures ranging from $800^{\circ}C\;to\;1000^{\circ}C$ in the air and in vacuum. The effect of the annealing on microstructural stability and room-temperature mechanical properties of the alloy was investigated. The microstructure of the cold rolled OS alloy remained stable until the annealing at $900^{\circ}C$ in the air and in vacuum. No recrystallization of original grains occurred, but the dislocation density decreased and newly formed subgrains were observed. The alloy annealed at $1000^{\circ}C$ in the air experienced recrystallization and grain growth took place, however annealing in vacuum at $1000^{\circ}C$ did not cause the microstructural change. The mechanical property of the alloy was changed slightly with the annealing if the microstructure remained stable. However, the strength of the specimen that was recrystallized decreased drastically.

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References

  1. P.K. Sarnal and A.V. Nadkarni : Modem Developments of Powder Metallurgy, MPIF, Princeton, New Jersey, 16 (1984) 341
  2. A.v. Nadkarni: High Conductivity Copper and Aluminum Alloys, E. Ling and P.W Taubenblat(Ed.), TMS, New York (1984) 77
  3. T.J. Miller, S.J. Zinkie, and B.A. Chin: J. of Nuclear Materials, 179-181 (1991) 263 https://doi.org/10.1016/0022-3115(91)90076-J
  4. C.K. Lee, B.A. Chin, RC. Wilcox, S. Zinkie: J. of Nuclear Materials, 191-194 (1992) 488 https://doi.org/10.1016/S0022-3115(09)80093-7
  5. R.S. W Shewfelt and L.M. Brown: Philosophical Magazine, 30 (1974) 1135 https://doi.org/10.1080/14786437408207265
  6. R.S. W Shewfelt and L.M. Brown: Philosophical Magazine, 35 (1977) 945 https://doi.org/10.1080/14786437708232636
  7. K.M. Zwilsky and N.J. Grant: AlME Trans., 221 (1961) 371
  8. O. Preston and N.J. Grant: AlME Trans., 221 (1961) 164
  9. P. Krautwasser, M. Widera, D. Esser, B.D. Wirth, and D. Sporer: High Temp. -High Pressures, 26 (1994) 549
  10. P. Krautwasser, A. Czyrska-Filemonowicz, M. Widera, andF. Carsughi: Mat. Sci. Eng., A177 (1994) 199
  11. W.F. Schilling and N.J. Grant: Powder Metallurgy Int., 5 (1973) 117
  12. Y. Kawasaki, Y. Ikeda, T. Kobayashi, and H. Sumiyoshi: ISIJ International, 36 (1996) 1208 https://doi.org/10.2355/isijinternational.36.1208
  13. E. Aemoudt et al.: Key Eng. Mat., 29-31 (1989) 373 https://doi.org/10.4028/www.scientific.net/KEM.29-31.373
  14. A. V Nadkarni and E. P. Weber: Welding Joumal, November (1977)
  15. S. Mrowec and A. Stoklosa: Oxidation of Metals, 3 (1971) 291 https://doi.org/10.1007/BF00603530