Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지
DOI QR코드

DOI QR Code

Inhomogeneous Deformation Between Construction Materials in the Cu/Al and Fe/Al Co-extrusion Processes

Cu/Al 및 Fe/Al 층상복합재료 압출공정에서 구성재료의 불균일 변형

  • 서정민 (인하대학교 기계공학부) ;
  • 노정훈 (인하대학교 기계공학부) ;
  • 민경호 (인하대학교 기계공학부) ;
  • 황병복 (인하대학교 기계공학부) ;
  • 함경춘 (인하공업전문대학 기계설계과) ;
  • 장동환 (인하공업전문대학 기계설계과)
  • Published : 2007.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper is concerned with the analysis of plastic deformation of bimetal co-extrusion process. Two sets of material combination have been adopted for analysis, i.e. combinations of Cu/Al and Fe/Al. In the first set of material combination, the selected materials are AA 1100 aluminum alloy as hard material and CDA 110 as soft one. This type of material selection is to examine the effect of hard core and soft sleeve and vice versa on the deformation pattern in terms of plastic zone and velocity discontinuity along the contact surface between construction materials. Four different cases of co-extrusion process in terms of material combination and interference bonding were simulated to investigate the effect of material arrangement between core and sleeve, and of bonding on the plastic zones and velocity discontinuity. In the other set of material combination, model materials used as core and sleeve were AA 1100 and AISI 1010, which are relatively soft and hard, respectively. Process parameters except diameter ratio of core to sleeve material such as semi-die angle, reduction in area in global sense and die comer radius have been set constant throughout the simulation to concentrate our effort on the analysis of influence of diameter ratio on deformation behavior such as deformation zone, surface expansion, exit velocity discontinuity between composite materials, and extrusion forces.

Keywords

References

  1. Y. M. Hwang, T. F. Hwang, 2002, An Investigation into the Plastic Deformation Behavior within a Conical Die During Composite Rod Extrusion, J. Materials Processing Technology, Vol. 121, No. 2-3, pp. 226-233 https://doi.org/10.1016/S0924-0136(01)01254-7
  2. S. Imamura, T. Murakami, K. Ikeda, Z. Chen, 2000, Fabrication of Three-Layer. Pipes Composed of ZrO. 2. and Stainless Steel by Multi-Billet Extrusion Method, J. Jpn. Soc. Technol. Plast., 41, pp. 161- 165
  3. A. K. Tayal, R. Natarajan, 1981, A finite element analysis of axisymmetric. extrusion of composite rods, Int. J. Mach. Tool Des. Res. Vol. 21, pp. 227-235 https://doi.org/10.1016/0020-7357(81)90020-2
  4. B. Avizur, R. Wu, S. Talbert, Y. T. Chou, 1982, Criterion for the prevention of core fracture during extrusion of bimetal rods, J. Eng. Ind., Vol. 104, pp. 293-304 https://doi.org/10.1115/1.3185833
  5. D. Y. Yang, Y. G. Kim, C. M. Lee, 1991, An upper bound solution for axisymmetric extrusion of composite rods through curved die. Int. J. Mech. Vol. 31, No.4, pp. 565-575
  6. Hwang Beong-Bok, 1999, A Process Sequence Design on the Forming Process of Disk - Brake Piston. Met. and Mat. Int., Vol. 5, No.1, pp. 85-91 https://doi.org/10.1007/BF03026008
  7. C. S. Hartley, 1973, Int. J. Mech. Sci., Vol. 15, p. 651 https://doi.org/10.1016/0020-7403(73)90097-0
  8. R. Prakash, B. L. Juneja, 1977, J. Engr. Prod., Vol. 1, p.143
  9. H. T. Chai, D. H. Sansorne, 1974, 15th. Int., MTDR Conf. (Birmingham), p. 545
  10. B. Avitzur, J. M. Story, W. C. Hahn, 1976, Effect of receiver pressure on the observed flow pattern in the Hydrostatic Extrusion of Bimetal Rods, ASME J. Engr, For Indus., Vol. 98, No.3, pp. 909-913 https://doi.org/10.1115/1.3439051
  11. R. Sliwa, 1997, Plastic zones in the extrusion of metal composites, J. Mater. Proc. Tech., Vol. 67, No. 1-3, pp. 29-35 https://doi.org/10.1016/S0924-0136(96)02813-0
  12. D. H. Jang, B. B. Hwang, 2003, Rigid Plastic FE Modeling of Frictional Contact Problems based on a Penalty Method, Trans. of Mat. Processing, Vol. 12, No.1, pp. 34-42 https://doi.org/10.5228/KSPP.2003.12.1.034
  13. SFTC, 2004, DEFORM-2D User's Manual in Version 8.0, U.S.A