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Closed Access item Stacking fault energy measurements of Fe–Mn–Al–Si austenitic twinning-induced plasticity steels

Authors:Pierce, D. T.
Bentley, J.
Jiménez, José Antonio
Wittig, J. E.
Keywords:Transmission electron microscopy, TWIP steel, Faults, Dislocations, Stacking fault energy
Issue Date:2012
Publisher:Elsevier
Citation:Scripta Materialia 66(10) : 753-756 (2012)
Abstract:Since the stacking fault energy significantly influences the deformation mechanisms of Fe–Mn–Al–Si twinning-induced plasticity steels, two methods for its experimental determination by transmission electron microscopy of dislocations, namely the size of extended nodes and the separation of Shockley partials, were evaluated for an Fe–24.7Mn–2.66Al–2.92Si (wt.%) alloy. Measurement of partial dislocation separation provided the most reliable results, yielding a stacking fault energy of ∼16 mJ m−2, which is comparable to recent experimental and theoretical values for similar alloys.
Publisher version (URL):http://dx.doi.org/10.1016/j.scriptamat.2012.01.050
URI:http://hdl.handle.net/10261/57289
ISSN:1359-6462
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