Hot compression test data taken from Zhang  of metastable austenitic stainless steel AISI 316LN over a range of strain rates and temperatures shows typical dynamic recovery and recrystallization behavior. It is proposed to model this behavior by incorporating not only the hardening and recovery into the Bergstrom dislocation evolution equation, but also the recrystallization. It is shown that the initial mechanical response before recrystallization can be accurately represented by assuming that the mean free path evolves as the microstructure evolves from homogeneously spaced dislocations to cell-pattern. Results show that this novel continuum mechanical model can predict the observed behavior, showing a good match to the experimental data and capturing the transition from recrystallization to (almost) no recrystallization.
|Title of host publication||NUMISHEET 2016: 10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes|
|Publication status||Published - 4 Sep 2016|
|Event||10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes, NUMISHEET 2016 - Bristol, United Kingdom|
Duration: 4 Sep 2016 → 9 Sep 2016
Conference number: 10
|Conference||10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes, NUMISHEET 2016|
|Abbreviated title||NUMISHEET 2016|
|Period||4/09/16 → 9/09/16|
|Other||04-09-2016 - 09-09-2016|
Kooiker, H., Perdahcioglu, E. S., & van den Boogaard, A. H. (2016). Constitutive modeling of hot horming of austenitic stainless steel 316LN by accounting for recrystallization in the dislocation evolution. In NUMISHEET 2016: 10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes (pp. -). IOP.