Evolution of microstructure and residual stress during annealing of austenitic and ferritic steels

Roman Wawszczak (1) , Andrzej Baczmanski (1) , Marianna Marciszko (1) , Mirosław X. Wróbel (1) , Tomasz Czeppe (2) , Krzysztof Sztwiertnia (2) , Chedly Braham (3) , Katarzyna Berent (1)

1 AGH UST - AGH University of Science and Technology [Krakow, PL]
2 PAN - Polska Akademia Nauk = Polish Academy of Sciences = Académie polonaise des sciences
3 PIMM - Laboratoire Procédés et Ingénierie en Mécanique et Matériaux

In this work the recovery and recrystallization processes occurring in ferritic and austenitic steels were studied. To determine the evolution of residual stresses during material annealing the nonlinear sin 2 ψ diffraction method was used and an important relaxation of the macrostresses as well as the microstresses was found in the cold rolled samples subjected to heat treatment. Such relaxation occurs at the beginning of recovery, when any changes of microstructure cannot be detected using other experimental techniques. Stress evolution in the annealed steel samples was correlated with the progress of recovery process, which significantly depends on the value of stacking fault energy.

Mots clés: Crystallographic texture - Microstructure - Recovery - Recrystallization - Residual stresses - X-ray diffraction

Domaines: Sciences de l'ingénieur [physics]

Roman Wawszczak, Andrzej Baczmanski, Marianna Marciszko, Mirosław X. Wróbel, Tomasz Czeppe, et al.. Evolution of microstructure and residual stress during annealing of austenitic and ferritic steels. Materials Characterization, 2016, 112, pp.238-251. ⟨10.1016/j.matchar.2015.12.019⟩. ⟨hal-02270676⟩