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Article Dans Une Revue Materialia Année : 2023

Activated twinning variant determination in cold-rolled 316L stainless steel by effective Schmid factor analysis

Résumé

A method is proposed to determine accurately the activated twinning variant during the cold-rolling of 316L stainless steel parts produced by L-PBF (Laser Powder Bed Fusion) from EBSD datas. The twinning variant selection is carried out by Schmid factor (SF) computations, using an effective Schmid factor for cold-rolling specifically. Schmid factor was proven to be a relevant parameter to predict the experimentally activated twinning variant. Additionally, cold-rolling deformation is shown to be composed by a strong compression component, along with a minor traction component. The effective Schmid factor is then modified accordingly to ensure a better prediction of twinned grains. Moreover, twinning Schmid factor analyses in traction and compression provide valuable information on the twinning activation regarding textured materials such as L-PBF 316L steel.
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Dates et versions

hal-04192769 , version 1 (31-08-2023)

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Louis Lemarquis, Pierre-Francois Giroux, Hicham Maskrot, Philippe Castany. Activated twinning variant determination in cold-rolled 316L stainless steel by effective Schmid factor analysis. Materialia, 2023, 30, pp.101812. ⟨10.1016/j.mtla.2023.101812⟩. ⟨hal-04192769⟩
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