소성∙가공 (Transactions of Materials Processing)

  • 제12권4호
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  • Pages.376-381
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  • 2003
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  • 1225-696X(pISSN)
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  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
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누적압연접합에 의한 5052 Al 합금의 결정립 미세화와 기계적 특성 연구

An Investigation of Microstructural Evolution and Sliding Wear Behavior of Ultra-Fine Grained 5052 Aluminum Alloy Fabricated by an Accumulative Roll-Bonding Process

  • 하종수 (국민대학교 신소재공학부) ;
  • 강석하 (국민대학교 신소재공학부) ;
  • 김용석 (국민대학교 신소재공학부)
  • 발행 : 2003.07.01
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초록

Microstructural evolution and dry sliding wear behavior of ultra-fine grained 5052 Al alloy obtained by an accumulative roll-bonding process have been investigated. After 7 ARB cycles, ultra-fine grains with a large misorientation between neighboring grains were obtained. The grain size was about 0.2 $\mu$m. The hardness, tensile and yield strengths of the ultra-fine grained alloy increased as the amount of accumulated strain increased with the ARB cycles. Sliding wear tests of the ultra-fine grained 5052 Al alloy were conducted at room temperature. Wear rate of the ultra-fine grained alloy increased in spite of the increase of hardness. Surface of the worn specimens were examined with SEM to investigate wear mechanism of the ultra-fine grained alloy.

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참고문헌

  1. Mater. Sci. Eng. A v.272 Developing superplasic properties in an aluminum alloy through severe plastic deformation Sungwon Lee;P.B.Berbon;M.Furukawa;Z.Horita;M.Nemoto;N.K.Tsenev;R.Z.Valiev;T.G.Langdon https://doi.org/10.1016/S0921-5093(99)00470-0
  2. Mater. Sci. Eng. A v.137 Plastic deformation of alloys with submicron grained structure R.Z.Valiev;N.A.Krasilnikov;N.K.Tsenev https://doi.org/10.1016/0921-5093(91)90316-F
  3. Mater. Sci. Eng. A v.197 Materials processing by simple shear V.M.Segal https://doi.org/10.1016/0921-5093(95)09705-8
  4. Acta Mater. v.47 Novel ultra-high straining process for bulk materials-development of the accumulative roll-bonding(ARB) process T.Saito;H.Utsunomiya;N.Tsuji;T.Sakai https://doi.org/10.1016/S1359-6454(98)00365-6
  5. Metals and Materials Int. v.8 Deformation mechanisms of pure Ti during equal channel angular pressing D.H.Shin;I.Y.Kim;J.R.Kim
  6. J. Mater. Res. v.13 Observation of grain boundary structure in submicrometer-grained Cu and Ni using high-resolution electron microscopy Z.Horita;D.J.Smith;M.Nemoto;R.Z.Valiev;T.G.Langdon https://doi.org/10.1557/JMR.1998.0057
  7. J. Mater. Res. v.11 An investigation of grain boundaries in submicrometer-grained Al-Mg solid solution alloys using high-resolution electron microscopy Z.Horita;D.J.Smith;M.Furukawa;M.Nemoto;R.Z.Valiev;T.G.Langdon https://doi.org/10.1557/JMR.1996.0239
  8. Acta Mater. v.48 Deformation induced grain boundaries in commercially pure aluminum C.P.Chang;P.L.Sun;P.W.Kao https://doi.org/10.1016/S1359-6454(00)00138-5
  9. Metall. Mater. Trans. A v.29A Factors influencing the equilibrium grain size in equal channel angular pressing: role of Mg additions to aluminum Y.Iwahashi;Z.Horita;M.Nemoto;T.G.Langdon