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Study of internal stresses in a TWIP steel analyzing transient and permanent softening during reverse shear tests.

AutorGutierrez-Urrutia, I.; Valle, Jorge del; Zaefferer, S.; Raabe, D.
Palabras claveTwinning
TWIP steel
Bauschinger effect
Internal stress
Work hardening.
Fecha de publicación2010
CitaciónJournal of Materials Science 45 ( 24) : 6604-6610 (2010)
ResumenRecent Bauschinger-type tests conducted on a twinning-induced plasticity (TWIP) steel highlights the important contribution of internal stresses to work hardening [1]. Along this line we present Bauschinger experiments in a Fe-22Mn wt.%-0.6C wt.% TWIP steel. The mechanical behaviour upon load reversal shows transient and permanent softening effects. Determination of the internal stress from the magnitude of the permanent softening yields a contribution to work hardening of the order of 20%. Analysis of the transient softening, during strain reversal, indicates that internal stress are consistent with reported data on high carbon spheroidized steels.
Versión del editorhttp://dx.doi/org/10.1007/s10853-010-4750-7
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