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TECHNICAL PAPERS

Application of a Unified Viscoplastic Model With Mixed Hardening to Ionic Solids and Metallic Alloys

[+] Author and Article Information
O. M. L. Yahya

Stelco Inc., P.O. Box 2030, Hamilton, Ontario, L8N 3T1, Canadae-mail: ould-ml.yahya@stelco.ca

M. Aubertin

Department of Civil, Geological and Mining Engineering, École Polytechnique de Montréal, Case Postale 6079, Succursale Center-Ville, Montréal, Qc, H3C 3A7 Canadae-mail: michel.aubertin@polymtl.ca

J. Eng. Mater. Technol 124(2), 103-111 (Mar 26, 2002) (9 pages) doi:10.1115/1.1446865 History: Received October 17, 2000; Revised November 11, 2001; Online March 26, 2002
Copyright © 2002 by ASME
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References

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Poirier, J. P., 1985, Creep of crystals-High temperature deformation processes in metals, ceramics and minerals, Cambridge University Press, Cambridge.
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Krauz A. S., and Krausz, K., (eds.) 1996, Unified Constitutive Laws of Plastic Deformation, Academic Press, San Diego.
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Aubertin,  M., Yahya,  O. M. L., and Julien,  M. R., 1999, “Modeling mixed hardening of alkali halides with a modified viscoplastic model,” Int. J. Plast., 15, pp. 1067–1088.
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Figures

Grahic Jump Location
(a) Experimental and calculated curves of NaCl samples during CSR loading showing the effect of a sudden variation of the strain rate (see Table 1 for loading conditions). (b) Evolution of the ISVs for a salt sample submitted to a CSR test with sudden increase of strain rate (Table 1, CSR no 1).
Grahic Jump Location
Experimental and calculated response of salt samples during creep tests at various initial deviatoric stress levels. (Table 1, creep no 1, 2, 3).
Grahic Jump Location
Experimental and calculated response of a salt sample during stress relaxation test (initial deviatoric stress 10 MPa). (Table 1, relaxation test).
Grahic Jump Location
(a) Calculated and experimental curves for a tensile test on Inconel 738LC alloy (strain rate: 10−2 s−1; see Table 2 for loading conditions). (b) Evolution of the internal kinematic state variables for an Inconel 738LC sample submitted to a tensile test (strain rate 10−2 s−1). (Table 2, no 1).
Grahic Jump Location
Calculated and experimental curves for a tensile test on Inconel 738LC alloy with varying strain rate (10−6 s−1→10−2 s−1→10−6 s−1). (Table 2, no 2).
Grahic Jump Location
Calculated and experimental curves for a tensile test on Inconel 738LC alloy with varying strain rate (10−6 s−1→10−3 s−1→10−4 s−1). (Table 2, no 3).
Grahic Jump Location
Calculated and experimental curves for a fatigue-relaxation test on Inconel 738LC alloy (strain rate 10−3 s−1, hold time: 30 s). (a) Stress versus strain. (b) Stress versus time. (Table 2, no. 4).
Grahic Jump Location
Calculated and experimental curves of 3 creep tests on Inconel 738LC alloy (applied stress: 335 MPa (no 6), 392 MPa (no 7) and 410 MPa (no 8)). (See Table 2.)
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Predicted and experimental curves for a stress relaxation test on Inconel 738LC alloy. (a): Stress versus time. (b): Stress versus strain. (Table 2, no 5).
Grahic Jump Location
A cyclic straining along butterfly-type path
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Predicted and experimental curves for a butterfly-type straining test on Inconel 738LC alloy
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Calculated and experimental results for a tension test on A508 alloy steel at −196°C. (Table 3, no 1).
Grahic Jump Location
Calculated and experimental results for a cyclic test on A508 alloy steel at −196°C. (Table 3, no 2).
Grahic Jump Location
Calculated and experimental results for a cyclic test on A508 alloy steel at −196°C. (Table 3, no 3).

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