Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Characteristics of Plastic Deformation of Commercially Pure Aluminum in Half Channel Angular Extrusion (HCAE)

공업용 순 알루미늄의 반통로각압출(Half Channel Angular Extrusion) 공정에서의 소성 변형 특성

  • Kim, Kyung Jin (School of Mechanical and Automotive Engineering, Kyungil Univ.) ;
  • Cho, Hyun Deog (School of Mechanical and Automotive Engineering, Kyungil Univ.)
  • 김경진 (경일대학교 기계자동차학부) ;
  • 조현덕 (경일대학교 기계자동차학부)
  • Received : 2012.10.12
  • Accepted : 2012.10.19
  • Published : 2013.01.01
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Abstract

A novel severe plastic deformation process named half channel angular extrusion (HCAE) is proposed in order to produce bulk UFG materials. In HCAE process, equal channel angular extrusion (ECAE) and conventional forward extrusion process is integrated to increase the strain per pass and effectiveness of the SPD process. Three-dimensional finite element analysis was carried out to study the deformation behavior of the materials in the HCAE process. HCAE process was performed experimentally on commercially pure aluminum (AA1050) and micro-Vickers hardness test was used to measure the distribution of hardness on the section of normal to the extrusion direction. The results show that HCAE is able to impose more intensive strains per pass and give rise to higher micro-hardness than ECAE.

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References

  1. Segal, V. M., "Equal channel angular extrusion: from macromechanics to structure formation," Mater. Sci. and Eng., Vol. A271, No. 1-2, pp. 322-333, 1999. https://doi.org/10.1016/S0921-5093(99)00248-8
  2. Iwahashi, Y., Horita, Z., Nemoto, M., and Landon, T. G., "The process of grain refinement in equalchannel angular pressing," Acta Mater., Vol. 46, No. 9, pp. 3317-3331, 1998. https://doi.org/10.1016/S1359-6454(97)00494-1
  3. Iwahashi, Y., Wang, J., Horita, Z., Nemoto, M., and Langdon, T. G., "Principle of equal-channel angular pressing for the processing of ultra-fine grained materials," Scripta Mater., Vol. 35, No. 2, pp. 143-146, 1996. https://doi.org/10.1016/1359-6462(96)00107-8
  4. Nakashima, K., Horita, Z., Nemoto, M., and Langdon, T. G., "Development of a multi-pass facility for equal-channel angular pressing to high total strains," Mater. Sci. and Eng., Vol. A281, No. 1-2, pp. 82-87, 2000.
  5. Iwahashi, Y., Horita, Z., Nemoto, M., and Langdon, T. G., "An investigation of microstructural evolution during equal-channel angular pressing," Acta Mater., Vol. 45, No. 11, pp. 4733-4741, 1997. https://doi.org/10.1016/S1359-6454(97)00100-6
  6. Sun, P. L., Kao, P. W., and Chang, C. P., "Characteristics of submicron grained structure formed in aluminum by equal channel angular extrusion," Mater. Sci. and Eng., Vol. A283, No. 1-2, pp. 82-85, 2000. https://doi.org/10.1016/S0921-5093(99)00800-X
  7. Gholinia, A., Prangnell, P. B., and Markushev, M. V., "The effect of strain path on the development of deformation structures in severely deformed aluminium alloys processed by ECAE," Acta Mater., Vol. 48, No. 5, pp. 1115-1130, 2000. https://doi.org/10.1016/S1359-6454(99)00388-2
  8. Kim, K. J., Yang, D. Y., and Yoon, J. W., "Investigation of microstructure characteristics of commercially pure aluminum during equal channel angular extrusion," Mater. Sci. and Eng., Vol. A485, No. 1-2, pp. 621-626, 2008.
  9. Kim, K. J., Yang, D. Y., and Yoon, J. W., "Microstructural evolution and its effect on mechanical properties of commercially pure aluminum deformed by ECAE (Equal Channel Angular Extrusion) via routes A and C," Mater. Sci. and Eng., Vol. A527, No. 29-30, pp. 7927-7930, 2010.
  10. Kwon, G. H., Chae, S. W., Kwun, S. I., Kim, M. H., and Hwang, S. K., "Frictional Effects on the Deformation Behavior of Materials and Die during Equal Channel Angular Pressing (ECAP) with Pure-Zr," J. of the KSPE, Vol. 18, No. 6, pp. 182-187, 2001.
  11. Nakashima, K., Horita, Z., Nemoto, M., and Langdon, T. G., "Influence of channel angle on the development of ultrafine grains in equal-channel angular pressing," Acta Mater., Vol. 46, No. 5, pp. 1589-1599, 1998. https://doi.org/10.1016/S1359-6454(97)00355-8
  12. Valiev, R. Z. and Langdon, T. G., "Principles of equal-channel angular pressing as a processing tool for grain refinement," Prog. Mater. Sci., Vol. 51, No. 7, pp. 881-981, 2006. https://doi.org/10.1016/j.pmatsci.2006.02.003
  13. Saito, Y., Utsunomiya, H., Sakai, T., and Hong, R. G., "Ultra-fine grained bulk aluminum produced by accumulative roll-bonding (ARB) process," Scripta Mater., Vol. 39, No. 9, pp. 1221-1227, 1998. https://doi.org/10.1016/S1359-6462(98)00302-9
  14. Saito, Y., Utsunomiya, H., Tsuji, N., and Sakai, T., "Novel ultra-high straining process for bulk materials-development of the accumulative rollbonding (ARB) process," Acta Mater., Vol. 47, No. 2, pp. 579-583, 1999. https://doi.org/10.1016/S1359-6454(98)00365-6
  15. Tsuji, N., Saito, Y., Utsunomiya, H., and Tanigawa, S., "Ultra-fine grained bulk steel produced by accumulative roll-bonding (ARB) process," Scripta Mater., Vol. 40, No. 7, pp. 795-800, 1999. https://doi.org/10.1016/S1359-6462(99)00015-9
  16. Nishida, Y., Arima, H., Kim, J. C., and Ando, T., "Rotary-die equal channel angular pressing of an Al-7 Mass% Si-0.35 Mass% Mg alloy," Scripta Mater., Vol. 45, No. 3, pp. 261-266, 2001. https://doi.org/10.1016/S1359-6462(01)00985-X
  17. Yoon, S. C., Seo, M. H., and Kim, H. S., "Finite Element Analysis of Continuous Rotary-Die Equal Channel Angular Pressing," Trans. Mater. Process., Vol. 15, No. 7, pp. 524-528, 2006. https://doi.org/10.5228/KSPP.2006.15.7.524
  18. Talebanpour, B., Ebrahimi, R., and Janghorban, K., "Microstructural and mechanical properties of commercially pure aluminum subjected to Dual Equal Channel Lateral Extrusion," Mater. Sci. and Eng., Vol. A527, No. 1-2, pp. 141-145, 2009. https://doi.org/10.1016/j.msea.2009.07.040
  19. Kocich, R., Gregera, M., Kursa, M., Szurman, I., and Machackova, A., "Twist channel angular pressing (TCAP) as a method for increasing the efficiency of SPD," Mater. Sci. and Eng., Vol. A527, No. 23, pp. 6386-6392, 2009.
  20. Shahbaz, M., Pardis, N., Ebrahimi, R., and Talebanpour, B., "A novel single pass severe plastic deformation technique: Vortex extrusion," Mater. Sci. and Eng., Vol. A530, pp. 469-472, 2011.
  21. Mani, B., Jahedi, M., and Paydar, M. H., "A modification on ECAP process by incorporating torsional deformation," Mater. Sci. and Eng., Vol. A528, No. 12, pp. 4159-4165, 2011.

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