Abstract
An integrated approach, involving laboratory experiments, extrusion plant trials, and finite element modeling (FEM) has been adopted for the study of the extrusion of the metal matrix composite (MMC) 6061/Al2O3/20p. Gleeble compression tests were performed to develop the constitutive equation of the MMC under industrial extrusion process conditions. Extrusion plant trials were conducted to measure load and temperature and to obtain samples for microstructural analysis. Metal flow, with respect to particle behavior in the deformation zone, was examined microscopically. An FEM based on the commercial code DEFORM was adopted for the simulation of the extrusion of the MMC; the constitutive equation developed was incorporated into the model. Using an updated Lagrangian formulation, both the transient and steady-state regions of extrusion were modeled. Load and temperature predictions resulting from this model agree well with the measured values in the upsetting stage and in the steady-state region. Temperature predictions agree to within less than 3 pct of the measured values. The FEM predictions of temperature, stress, strain, and strain-rate distribution were correlated with the particle behavior and low-speed cracking during extrusion: large shear deformation promotes particle fracture in the deformation zone, and tensile stress generation in the die land zone of the billet leads to low-speed cracking of the MMC during extrusion. The latter occurs at low temperature in the front end of the billet at the beginning of the extrusion process due to heat loss to the cold die.
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J.E. Allison and G.S. Cole:JOM, 1993, vol. 45 (1), pp. 19–24.
W. Dixon: in5th Int. Aluminum Extrusion Technology Seminar, The Aluminum Association, Washington, D.C., 1992, vol. I, pp. 429–36.
R.W. Hains, P.L. Morris, and P.W. Jeffrey:Proc. Int. Symp. Advanced Structural Materials, 1988, pp. 53–60.
S. Brusethaug, O. Reiso, and W. Ruch:Proc. Int. Conf. on Particulate-Reinforced Metal Matrix Composites, J. Masounave and F.G. Hamel, eds., Montreal, PQ, Canada, Sept. 17–19, 1990, pp. 173–79.
J.E. Selseth and M. Lefstad:5th Scandinavian Symp. on Materials Science, Copenhagen, May 22–25, 1989, pp. 1–8.
C.H.J. Davies:Mater. Sci. Forum, 1995, vols. 104–107, pp. 447–58.
B.J. Meadows and M.J. Cutler:J. Inst. Met., 1969, vol. 97, pp. 321–26.
T. Sheppard and D. Raybould:J. Inst. Met., 1973, vol. 101, pp. 73–78.
O. Reiso: inProc. 4th Int. Aluminum Extrusion Technical Seminar, The Aluminum Association, Washington, D.C., 1988, pp. 287–95.
M.P. Clode and T. Sheppard:Mater. Sci. Technol. 1993, vol. 9, pp. 313–18.
T. Sheppard:Int. Conf. on Aluminium Alloys, C.Q. Chen and E.A. Starke, eds., Intl. Academic Publishers, 1990, vol. 2, pp. 744–54.
A.F. Castle and T. Sheppard:Met. Technol., 1976, vol. 3, pp. 465–75.
H.J. McQueen and O.C. Celliers:Mater. Forum, 1993, vol. 17, pp. 1–13.
A.F. Castle and T. Sheppard:Met. Technol., 1976, vol. 3, pp. 454–64.
T. Sheppard:Mater. Sci. Technol., 1993, vol. 9, pp. 430–40.
T. Sheppard and D. Raybould:J. Inst. Met., 1973, vol. 101, pp. 33–44.
G.J. Richardson, D.N. Hawkins, and C.M. Sellars: inWorked Examples in Metalworking, Institute of Metals, London, 1985, p. 148.
W. Johnson, R. Sowerby, and R.D. Venter:Plane Strain Slip Line Fields For Metal Deformation Processes: a Source Book and Bibliography, Pergamon Press, Oxford, 1982, p. 92.
A.H. Shabaik:J. Mater. Proc. Technol., 1991, vol. 27, pp. 3–24.
G. Grasmo, K. Holthe, S. Støren, H. Valberg, R. Flatval, L. Hanssen, M. Lefstad, O. Lohne, T. Welo, R. Ørsund, and J. Herberg:5th Int. Aluminum Extrusion Technology Seminar, The Aluminum Association, Washington, D.C., 1992, vol. II, pp. 367–76.
T. Reinikainen, K. Andersson, S. Kivivuori, and A.S. Korhonen:J. Mater. Proc. Technol., 1992, vol. 34, pp. 101–108.
A. Alto, L.M. Galantucci, and L. Tricarico:J. Mater. Proc. Technol., 1992, vol. 31, 335–45.
C. Devadas and O.C. Celliers: in5th Int. Aluminum Extrusion Technology Seminar, The Aluminum Association, Washington, D.C. 1992, vol. I, pp. 359–68.
T. Sheppard and D.S. Wright:Met. Technol., 1979, vol. 6, pp. 215–23.
S.-I. Oh, W.T. Wu, J.P. Wang, and A. Vedhanayagam:J. Mater. Proc. Technol., 1991, vol. 27, pp. 25–42.
S. Kobayashi, S.-I. Oh, and T. Altan:Metal Forming and the Finite Element Method, 1st ed., OUP, Oxford, United Kindom, 1989, pp. 111–30.
C.O. Hlady, J.K. Brimacombe, I.V. Samarasekera, and E.B. Hawbolt:Metall. Mater. Trans., 1995, vol. 26B, pp. 1019–27.
O.Z. Zienkiewicz and R.L. Taylor:The Finite Element Method, Basic Formulation and Linear Problems, 4th ed., McGraw-Hill Book Company Europe, London, U.K., 1993, vol. 1.
C.H.J. Davies, E.B. Hawbolt, I.V. Samarasekera, and J.K. Brimacombe:J. Mater. Processing Technol., 1996, accepted for publication.
C.H.J. Davies, W.C. Chen, E.B. Hawbolt, I.V. Samarasekera, and J.K. Brimacombe:Scripta Metall. Mater., 1995, vol. 32.
S. Blecic, W. Libura, and J. Zasadzinski:5th Int. Aluminum Extrusion Technology Seminar, The Aluminum Association, Washington, D.C., 1992, vol. II, pp. 485–94.
C.C. Chen, S.I. Oh, and S. Kobayashi:J. Eng. Ind., 1979, vol. 101, pp. 23–35.
T. Sheppard and M.P. Clode:4th Int. Aluminum Extrusion Technology Seminar, Chicago, IL, Apr. 11–14, 1988, pp. 329–41.
L. Chevalier and N. Dahan:J. Mater. Proc. Technol. 1992, vol. 31, pp. 199–208.
P. Sakaris and H.J. McQueen:3rd. Int. Conf. on Aluminium Alloys, L. Arnberg, O. Lohne, E. Nes, and N. Ryum, eds., Norwegian Institute of Technology, Trondheim, 1992, pp. 554–59.
D. Yu and T. Chandra: inProc. Conf. Advanced Composites ’93, T. Chandra, ed., TMS, Warrendale, PA, 1993.
W.C. Chen: Ph.D. Dissertation, University of British Columbia, Vancouver, BC, Canada, 1995.
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Chen, W.C., Davies, C.H.J., Samarasekera, I.V. et al. Mathematical modeling of the extrusion of 6061/Al2O3/20p composite. Metall Mater Trans A 27, 4095–4111 (1996). https://doi.org/10.1007/BF02595658
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DOI: https://doi.org/10.1007/BF02595658