Estimation of grain size and grain orientation influence in microforming processes by Taylor factor considerations

Journal of Materials Processing Technology

Volumn 209, Issue 4, 2009, Pages 2111-2121

  Justinger, H ^a   Hirt, G ^a  

^a RWTH AACHEN UNIVERSITY   (Germany)

Author keywords

Deep drawing; Microforming; Scaling; Size effects; Taylor factor

Indexed keywords

GRAIN SIZE AND SHAPE; PLASTIC FLOW;

BASIC MODELS; FLOW STRESSES; FOIL THICKNESSES; FORMING PROCESSES; GEOMETRICAL ACCURACIES; GRAIN ORIENTATIONS; GRAIN SIZES; MAIN EFFECTS; MEDICAL DEVICES; MICRO PARTS; MICROCOMPRESSION; MICROFORMING; MICROFORMING PROCESSES; MICROTENSILE TESTS; PART GEOMETRIES; REPRODUCIBILITY; SCALING; SCALING EFFECTS; SINGLE GRAINS; SIZE EFFECTS; TAYLOR FACTOR; TRIAL AND ERRORS; UNIT VOLUMES;

DEEP DRAWING;

EID: 58349094324     PISSN: 09240136     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.jmatprotec.2008.05.008     Document Type: Article

References (29)

1. Armstrong W. On size effects in polycrystal plasticity. J. Mech. Phys. Solids 9 (1961) 196-219
2. Bishop J.F.W., and Hill R. A theory of the plastic distortion of a polycrystalline aggregate under combined stresses. Phil. Mag. 7, 42 (1951) 414-427
3. Bishop J.F.W., and Hill R. A theoretical derivation of the plastic properties of a polycrystalline face-centered metal. Phil. Mag. 42 (1951) 1298-1307
4. Bunge H.-J. Mathematische Methoden der Texturanalyse (1969), Akademie-Verlag (Bestellnummer 5703. ES 20 F 9, 19 B 4, 18 B 1)
5. Bunge H.-J. Texture Analysis in Materials Science, Mathematical Methods (1982), Butterworths
6. Chin G.Y., and Mammel W.L. Computer solutions of the Taylor analysis for axisymmetric flow. Trans. Met. Soc., AIME 239 (1967) 1400-1405
7. Claussen, B., 1997. Characterisation of Polycrystal Deformation. Ris National Laboratory. Roskilde ISBN 87-550-2304-5. ISSN 0106-2840. Denmark.
8. Engel U., and Eckstein R. Microforming-from basic research to its realization. J. Mater. Process. Technol. 125-126 (2002) 35-44
9. Gau J.-T., Principe C., and Wang J. An experimental study on size effects on flow stress and formability of aluminum and brass for microforming. J. Mater. Process. Technol. 184 (2007) 42-46
10. Geiger M., Messner A., Engel U., Kals R., and Vollertsen F. Design of microforming processes-fundamentals. Material data and friction behaviour. Proceedings of the Ninth International Cold Forging Congress. Solihull, UK, May 22-26 (1995) 155-164
11. Geiger M., Vollertsen F., and Kals R. Fundamentals on the manufacturing of sheet metal microparts. Ann. CIRP 45/1/1996 (1996) 277-282
12. Henning, M., 2007. Größeneffekte auf die mechanischen Eigenschaften-Experiment und Simulation. Dissertationsschrift. Saarland University.
13. Henning M., and Vehoff H. Größeneffekte im Zugversuch aufgrund plastischer Anisotropie. Strahltech. 27 (2005), BIAS Verlag. 3-933762-17-0 pp. 137-146
14. Henning M., and Vehoff H. Statistical size effects based on grain size and texture in thin sheets. Mater. Sci. Eng. A 452-453 (2007) 602-613
15. Hosford W.F. The Mechanics of Crystals and Textured Polycrystals (1993), Oxford University Press. 978-0195077445
16. Hu Z., Schulze Niehoff H., and Vollertsen F. Tribological size effects in deep drawing. Proceedings of the Second International Congress on New Forming Technology (ICNFT) (2007), IAS-Verlag. 978-3-933762-22-1 573-582
17. Krishnan N., Cao J., Kinsey B., Parasiz S.A., and Li M. Investigation of deformation characteristics of micropins fabrication using microextrusion. Proceedings of IMECE, ASME International Mechanical Engineering Conference and Exposition. Orlando (2005)
18. Miyazaki S., and Fujita H. Effects of grain size and specimen thickness on mechanical properties of polycrystalline copper and copper-aluminum alloy. Trans. JIM. 19 (1978) 438-444
19. Miyazaki S., Shibata K., and Fujita H. Effect of specimen thickness on mechanical properties of polycrystalline aggregates with various grain sizes. Acta Metall. 27 (1978) 855-862
20. Miyazaki S., Fujita H., and Hiraoka H. Effect of specimen size on the flow stress of rod specimens of polycrystalline Cu-Al Alloy. Scripta Metall. 13 (1979) 447-449
21. Pawelski O. Ähnlichkeitstheorie in der Umformtechnik. Plastomechanik und Werkstoffkunde (1993), Springer, Berlin (ISBN: 3-50-56682-1)
22. Pell-Walpole T. The effect of grain-size on the tensile strength of tin and tin alloys. J. Inst. Met. 69 (1943) 131-146
23. Raulea L.V., Govaert L.E., and Baaijens F.T. Grain and specimen size effects in processing metal sheets, advanced technology of plasticity, Vol. II. Proceedings of the Sixth ICTP. September 19-24 (1999) 939-944
24. Reid C.N. Deformation Geometry for Material Scientists (1973), Pergamon Press
25. Rollett, A. D. 2006. Online course material for the course: advanced characterization and microstructural analysis. URL: http://neon.mems.cmu.edu/rollett/27750/27750.html.
26. Schäfer R., Henning M., and Groche P. Finite element calculation of surface evolution considering grain size and crystallographic texture effects. Proceedings of the Third ICTMP. Yokohama (2007) 219-226
27. Taylor G.I. Plastic strains in metals. J. Inst. Met. 62 (1938) 307-324
28. Taylor G.I. Strains in Crystalline Aggregate. International Union of Theoretical and Applied Mechanics (Deformation and Flow of Solids) (1955), Springer-Verlag, Colloquium Madrid pp. 3-12
29. van Putten K., Kopp R., and Hirt G. Influences of sizes effects on the rolling of microstrip. Proceedings of the 10th Esaform, April (2007) 629-634 (ISBN: 78-0-7354-0414-1)