Abstract
The finite element simulation of various metal forming processes assists in producing defect-free final products from billet and sintered powdered-metal(P/M) preforms. In this paper a rigid-thermoviscoplastic finite element program, including the effect of compressibility of the material and temperature on deformation was applied to forming of sintered P/M preforms in ring compression, die pressing, closed-die forging at room temperature, and non-isothermal plane-strain compression. Possible fracture sites in such sintered P/M forming processes were predicted from the numerical simulations and compared with the experimental observations available in the literature. Also, the computed macroscopic densification and forging pressure required were compared with the available data. Finally, the effect of temperature on metal flow has been investigated in conventional hot forging.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Kobayashi, S., “A Review on the Finite-Element Method and Metal-Forming Process Modelling,”” J. Appl. Metalworking, 2, p. 163, 1982.
Pittman, J.F.T., et. al. (editors), Numerical Analysis of Forming Processes. A Wiley-Interscience Publication, John Wiley & Sons, 1984.
Lange, K. (editor), Simulation of Metal Forming Processes by the Finite Element Method. Workshop Proceedings, Stuttgart, 1985.
Monograph of the Publications of Centre De Mise En Forme Des Materiaux, Groupe Thermo-Mecanique Plasticite, Sophia-Antipolis-06560 Valbonne, France, Private Communication, 1986.
Oh, S.I. and Gegel, H.L., “ALPIDP - Modeling of P/M Forming by the Finite Element Method,” Private Communication, 1986.
Im, Y.T. and Kobayashi, S., “Finite-Element Analysis of Plastic Deformation of Porous Materials,” Metal Forming and Impact Mechanics(edited by Reid, S.R.), p.103, Pergamon Press, 1985.
Im, Y.T. and Kobayashi, S., “Coupled Thermo-Viscoplastic Finite Element Analysis of Plane-strain Compression of Porous Materials,” Advanced Manufacturing Processes, 1 (2), p. 269, 1986.
Im, Y.T. and Kobayashi, S., “Analysis of Axisymmetric Forging of Porous Materials by the Finite Element Method,” ibid, 1 (3&4), p. 473–499, 1986.
Kuhn, H.A. and Lawley, A. (editors), Powder Metallurgy Processing. Academic Press, 1978.
Downey, C.L. and Kuhn, H.A., “Designing P/M Preforms for Forging Axisymmetric Parts,” Int. J. Powder Met. & Tech., 11, p. 255, 1975.
Fischmeister, H.F., Aren, B., and Eastering, K.E., “Deformation and Densification of Porous Preforms in Hot Forging,” Powder Metallurgy. 14 (27). p. 144, 1971.
Schacher, H.D., Kaltmassivumformen von Sintermetall. Ph.D. Dissertation, Institute fur Umformtechnik, Universitat Stuttgart, 1978.
Im, Y.T., et. al., “Applications of FEM to Simulations of Non-isothermal Forging Processes,” Technical Report No. ERC/NSM-87-15, ERC for Net Shape Manufacturing, The Ohio State University, Columbus, Ohio, USA, 1987.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1988 Kluwer Academic Publishers
About this paper
Cite this paper
Im, YT., Kobayashi, S. (1988). Finite Element Applications in Forming Billet and P/M Preforms. In: Chenot, J.L., Oñate, E. (eds) Modelling of Metal Forming Processes. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1411-7_24
Download citation
DOI: https://doi.org/10.1007/978-94-009-1411-7_24
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7131-4
Online ISBN: 978-94-009-1411-7
eBook Packages: Springer Book Archive