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Communication Dans Un Congrès Année : 2013

Formation of annealing twins during recrystallization and grain growth in 304L austenitic stainless steel

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Résumé

Understanding of the mechanisms of annealing twin formation is fundamental for grain boundary engineering. In this work, the formation of annealing twins in a 304L austenitic stainless steel is examined in relation to the thermo-mechanical history. The behavior of annealing twins of various morphologies is analyzed using an in-situ annealing device and EBSD. The results confirm that there is a synergistic effect of prior strain level on annealing twin density generated during recrystallization. The higher the prior strain level, the higher the velocity of grain boundary migration and the higher the annealing twin density in the recrystallized grains. This effect decreases as the recrystallization fraction increases. The existing mathematical models (Pande's model and Gleiter's model), which were established to predict annealing twin density in the grain growth regime, can not predict this phenomenon
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Dates et versions

hal-00821808 , version 1 (13-05-2013)

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Yuan Jin, Marc Bernacki, G.S. Rohrer, Anthony D. Rollett, Brian Lin, et al.. Formation of annealing twins during recrystallization and grain growth in 304L austenitic stainless steel. 5th International Conference on Recrystallization and Grain Growth, ReX and GG 2013, May 5, 2013 - May 10, 2013, May 2013, Sydney, Australia. pp.113-116, ⟨10.4028/www.scientific.net/MSF.753.113⟩. ⟨hal-00821808⟩
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