Abstract
A force-equilibrium approach was utilized to simulate the tensile behavior of sheet specimens under cavitating conditions. Unlike previous work, the current model incorporated the effect of stress state on the cavity growth rate parameter η. It was found that stress triaxiality that develops after quasistable deformation has a relatively small effect on η. Thus, at a given level of true strain, the increased value of η leads to higher cavity volume fraction inside the specimen. Simulation results revealed that tensile elongation is not affected by the higher cavity growth rate parameter when failure is localization controlled; however, in cases in which failure is fracture (cavitation) controlled, the overall elongation decreases.
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References
P. W. Bridgman, in “Studies in Large Plastic Flow and Fracture” (McGraw-Hill, New York, NY, 1952) p. 36.
S. L. Semiatin, A. K. Ghosh and J. J. Jonas, Metall. Trans. A 16A (1985) 2039.
J. Lian and M. Suery, Mater. Sci. Technol. 2 (1986) 1093.
P. D. Nicolaou, S. L. Semiatin and C. M. Lombard, Metall. Mater. Trans. A 27A (1996) 3112.
M. J. Stowell, in“Superplastic Forming of Structural Alloys,” edited by N. E. Paton and C. H. Hamilton (TMS-AIME, Warrendale, PA, USA, 1982) p. 321.
J. R. Rice and D. M. Tracey, J. Mech. Phys. Solids 17 (1969) 201.
J. Pilling and N. Ridley, Acta Metall. 34 (1986) 669.
B. Budianski, J. W. Hutchinson and S. Slutsky, in “The Rodney Hill 60th Anniversary Volume,” edited by H. G. Hopkins and M. J. Sewell (Pergamon Press, Oxford, England, 1982) p. 13.
M. J. Stowell, Metal Sci. 14 (1980) 267.
A. C. F. Cocks and M. F. Ashby, ibid. 16 (1982) 465.
C. M. Lombard, R. L. Goetz and S. L. Semiatin, Metall. Trans. A 24A (1993) 2039.
P. D. Nicolaou and S. L. Semiatin, Scripta Mater. 36 (1997) 83.
C. M. Lombard, A. K. Ghosh and S. L. Semiatin, in “Advances in the Science and Technology of Titanium Alloy Processing,” edited by I. Weiss, R. Srinivasan, P. J. Bania, D. Eylon and S. L. Semiatin (The Minerals, Metals, and Materials Society, Warrendale, PA, 1996) p. 161.
P. D. Nicolaou and S. L. Semiatin, Metall. Mater. Trans. A 27A (1996) 3675.
L. Weber, M. Kouzeli, C. San Marchi and A. Mortensen, Scripta Mater. 41 (1999) 549.
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Nicolaou, P.D., Semiatin, S. The effect of stress triaxiality on tensile behavior of cavitating specimens. Journal of Materials Science 36, 5155–5159 (2001). https://doi.org/10.1023/A:1012485510150
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DOI: https://doi.org/10.1023/A:1012485510150