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Twinning Models in Self‐Consistent Texture Simulations of TWIP Steels
Author(s) -
Prakash Aruna,
Hochrainer Thomas,
Reisacher Eduard,
Riedel Hermann
Publication year - 2008
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.200806178
Subject(s) - twip , crystal twinning , materials science , stacking fault energy , metallurgy , austenite , plasticity , anisotropy , texture (cosmology) , ductility (earth science) , hardening (computing) , work hardening , dislocation , composite material , microstructure , creep , layer (electronics) , physics , image (mathematics) , quantum mechanics , artificial intelligence , computer science
The high work hardening rate and ductility of high manganese austenitic steels is mainly attributed to the strong twinning induced plasticity (TWIP) effect found in the material. With a low stacking fault energy, mechanical twinning acts as a competitive mechanism to the more common dislocation glide. In order to understand the micromechanical behaviour of such steels, especially with respect to texture and anisotropy, constitutive models for twinning which account for the TWIP effect both in orientation changes and plastic behaviour are required. Using a self‐consistent texture model, we evaluate two twin modelling approaches in view of prediction of crystallographic texture. Tension experiments were carried out on a rolled TWIP sheet and the textures compared with the simulated results. The evolution of twin volume fractions from the two models is also evaluated.