소성∙가공 (Transactions of Materials Processing)

  • 제12권1호
  • /
  • Pages.43-48
  • /
  • 2003
  • /
  • 1225-696X(pISSN)
  • /
  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
권호 표지
DOI QR코드

DOI QR Code

알루미늄 판재구속전단가공에서 형성되는 불균일 변형의 유한요소해석

FEM Analysis on Deformation Inhomogeneities Developed in Aluminum Sheets During Continuous Confined Strip Shearing

  • 최호준 (인하대학교 자동화공학과) ;
  • 이강노 (고려대학교 신소재공학과) ;
  • 황병복 (인하대학교 기계공학부) ;
  • 허무영 (고려대학교 재료공학부)
  • 발행 : 2003.02.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

The strain state during the continuous confined strip shearing (CCSS) based on ECAP was tackled by means of a two-dimensional FEM analysis. The deformation of AA 1100 sheet in the CCSS apparatus was composed of three distinct processes of rolling, bending and shearing. The pronounced difference in the friction conditions on the upper and lower roll surfaces led to the different variation of the strain component ${epsilon}_13$ throughout the thickness of the aluminum sheet. Strain accompanying bending was negligible because of a large radius of curvature. The shear deformation was concentrated at the corner of the CCSSchannel where the abrupt change in the direction of material flow occurred. The process variables involving the CCSS-die design and frictions between tools and strip influenced the evolution of shear strains during CCSS.

키워드

참고문헌

  1. Acta Materialia v.46 Influence of cahnnel angle on the development of ultrafine grains in equal chan-nel angular pressing K. Nakashima;Z. Horita;M. Nemoto;T. G. Langdon https://doi.org/10.1016/S1359-6454(97)00100-6
  2. Acta Materialia v.46 The process of grainrefinement in equal-channel angular pressing Y. Iwahashi;Z. Horita;M. Nemoto;T. G. Langdon https://doi.org/10.1016/S1359-6454(97)00355-8
  3. Material Science Engineeri-ng A v.241 Microstruc-tural characteristics and superplastic duct-ility in a Zn-22% Al alloy with submicrometer grain size M. Furukawa;Y. Ma;Z. Horita;M. Nemoto;R. Valiev;T. G. langdon https://doi.org/10.1016/S1359-6454(97)00494-1
  4. Metally (Eng. Trans. : Russian Mentallurgy) v.1 Plastic working of metal by simple shear V. M. Segal;V. I. Reznikor;A. E. Drobyshevskiy;V. I. kopylov https://doi.org/10.1016/S0921-5093(97)00481-4
  5. Scripta Material v.37 An experimental study of equal channel angular extrusion Y. Wu;I. Baker https://doi.org/10.1016/S1359-6462(97)00132-2
  6. Scriprta Matertialia v.41 no.4 Direct observation if shear defotmation during eqial channel angular pressing of pure aluminum A. Shan;I. G. Moon;H. S. Ko;J. W. Park https://doi.org/10.1016/S1359-6462(97)00132-2
  7. Met. Mater. Trans. v.30A Finite-Element Modeling of NonisothermalEqual-ChannelAngular Extrusion S. D. P. DeLo;L. Semiatin https://doi.org/10.1016/S1359-6462(99)00188-8
  8. J. KSPE v.19 no.8 Finite element analysis of deformation behavior due to material properties during equal channel angular pressing G. H. Bae;G. H. Kwon; S. W. Chae;S. I. Kwun;M. H. Kim;S. K. Hwang
  9. Maters. Sci. Forum v.396;480 Evolution of texture and microstructure in AA 3004 sheets during continuous confined strip shearing deformation and subsequent annealing Y. H. Chung;D. H. Kim;H. T. Jeong;O. Engler;M. Y. Huh
  10. Maters. Sci. Forum v.408;412 Effect of strain paths on the evolution of texture and work hardening in AA 5052 sheets during continuous confined strip shearing deformation Y. H. Chung;J. P. Ahn; H. D. Kim;B. B. Hwang;O. Engler;M. Y. Huh
  11. Materials Research Bulletin v.36 Controlling the textures of the metal strips via the continuous confined strip shearing(C2S2) process J. C. Lee;H. K. Seok;J. H. Han;Y. H. Chung https://doi.org/10.1016/S0025-5408(01)00557-8
  12. (Version 7.0 )Users Manual SFTC https://doi.org/10.1016/S0025-5408(01)00557-8
  13. Stahl und Eisen v.50 Resistance and deformatio-n and the flow material during rolling E. Siebel
  14. Script Materialia v.46 Plastic flow and deformation homogeneity of 6061 Al during equal channel angular pressing B. S. Moon;H. S. Kim;S. I. Hong https://doi.org/10.1016/S1359-6462(01)01209-X
  15. Material Science Engineering A v.287 Analysis of the billet deformation behaviour in equal channel angular extrusion J. R. Bowen;A. Gholinia;S. M. Rogerts;P. B. Prangnell https://doi.org/10.1016/S1359-6462(01)01209-X
  16. Acta Materialia v.45 An inverstigation of microstructural evolution during equal Chan-nel angular pressing Y. Iwahashi;Z. Horita;M. Nemoto;T. G. Langdon https://doi.org/10.1016/S0921-5093(00)00834-0

피인용 문헌

  1. Analysis on Inhomogeneous Textures Developed in Aluminum AA 1050 Sheets during Continuous Confined Strip Shearing vol.13, pp.4, 2004, https://doi.org/10.5228/KSPP.2004.13.4.382
  2. Numerical Analysis on the Dissimilar Channel Angular Pressing by Multi-Pass Rolling vol.449-452, pp.1662-9752, 2004, https://doi.org/10.4028/www.scientific.net/MSF.449-452.101