A Novel Description of Thermomechanical Behavior Using a Rheological Model


Article Preview

Isothermal cyclic stress-strain deformation and thermomechanical deformation (TMD) of 429EM stainless steel were analyzed using a rheological model employing a bi-linear model. The proposed model was composed of three parameters: elastic modulus, yield stress and flow stress. Monotonic stress-strain curves at various temperatures were used to construct the model. The yield stress in the model was nearly same as 0.2% offset yield stress. Hardening relation factor, m, was proposed to relate cyclic hardening to kinematic hardening. Isothermal cyclic stress-strain deformation could be described well by the proposed model. The model was extended to describe TMD. The results revealed that the bi-linear thermomechanical model overestimates the experimental data under both in-phase and out-of-phase conditions in the temperature range of 350-500oC and it was due to the enhanced dynamic recovery effect.



Key Engineering Materials (Volumes 306-308)

Edited by:

Ichsan Setya Putra and Djoko Suharto






K. O. Lee et al., "A Novel Description of Thermomechanical Behavior Using a Rheological Model", Key Engineering Materials, Vols. 306-308, pp. 205-210, 2006

Online since:

March 2006




[1] R.P. Skelton: Int. J. of Fatigue, Vol. 26 (2004), p.253.

[2] S. Yoon, S.G. Hong and S.B. Lee: Mater. Sci. Eng. A, Vol. 364 (2004), p.17.

[3] M. Nagode and F. Zingsheim: Int. J. of Fatigue, Vol. 26 (2004), p.155.

[4] L.H. Donnell: Trans. ASME, Vol. 52 (1930), p.153.

[5] K.O. Lee, S. Yoon, S.B. Lee and B.S. Kim: Key Eng. Mater., Vol. 261-263 (2004), p.1135.

[6] S.G. Hong and S.B. Lee: Int. J. of Fatigue, Vol. 26 (2004), p.889.

In order to see related information, you need to Login.