Advanced Engineering Materials
© WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
(Adv. Eng. Mater. 6/2011)
The metastable phases (retained austenite, Haägg carbide) disappear from the as-cast Fe—C alloys after long anneal as well as after severe plastic deformation (SPD). The segregation in numerous grain boundaries after SPD consumes the carbon from cementite, and this phase partly disappears too. Further details can be found in the article by Straumal et. al. on page 463.