The progress in automobile engineering is closely associated with
the development of novel structural materials exhibiting enhanced mechanical
properties. Recently, high-Mn austenitic steels have been suggested
as one of the most promising candidates for structural
components in modern automobile bodies [1–3]. Generally, high-Mn
steels are characterized by relatively low stacking fault energies (SFE).
That promotes the activation of deformation twinning during cold
working [4–6] which, in turn, improves strain hardening and leads to
high uniform deformation. This so-called twinning-induced plasticity
(TWIP) effect facilitates a superior combination of strength and plasticity.
However, commercial application of TWIP steels is retarded by their
relatively low yield strength, which is a main disadvantage of hot rolled
semi-products of high-Mn austenitic steels [4,7].
The progress in automobile engineering is closely associated withthe development of novel structural materials exhibiting enhanced mechanicalproperties. Recently, high-Mn austenitic steels have been suggestedas one of the most promising candidates for structuralcomponents in modern automobile bodies [1–3]. Generally, high-Mnsteels are characterized by relatively low stacking fault energies (SFE).That promotes the activation of deformation twinning during coldworking [4–6] which, in turn, improves strain hardening and leads tohigh uniform deformation. This so-called twinning-induced plasticity(TWIP) effect facilitates a superior combination of strength and plasticity.However, commercial application of TWIP steels is retarded by theirrelatively low yield strength, which is a main disadvantage of hot rolledsemi-products of high-Mn austenitic steels [4,7].
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