Journal of Theoretical
and Applied Mechanics

55, 1, pp. 141-153, Warsaw 2017
DOI: 10.15632/jtam-pl.55.1.141

A semi-theoretical model for transformation plasticity occurred during bainitic transformation

Mahmoud Yaakoubi, Fakhreddine Dammak
This study addresses the task of predicting the transformation plasticity induced during pha-
se transformation of the 16MND5 carbon steel from austenite to bainite under low externally
applied stress using a semi-theoretical model based on the Greenwood-Johnson mechanism.
Both models proposed by Leblond et al. (1989) and Taleb and Sidoroff (2003) sufficiently
describe the evolution of the TRansformation Induced Plasticity (TRIP) during continuous
cooling of the austenitic phase. Nevertheless, TRIP values predicted by these models unde-
restimate measured data through the first half of the transformation and overestimate them
through the second half. So, we propose in this paper a method to improve Taleb’s model in
order to remove discrepancies between theoretical and experimental results throughout the
whole transformation and obtain a better description of experimental data.
Keywords: bainitic transformation, transformation induced plasticity (TRIP), traction loading