Abstract
Forming processes such as rolling or forging require detailed knowledge of the flow of the stress and deformation behavior at hot working conditions. Therefore, the deformation behavior of 16‐7‐6 CrMnNi TRIP steel with 30 vol% MgPSZ composite is studied by hot‐compression tests at a strain rate of 1 s−1. And highly particle reinforced TRIP‐Matrix‐Composite in a temperature range between 700 and 1200 °C show obvious changes in the flow curve behavior. At 700 °C, a step like shape with plateaus is clearly pronounced. With increasing temperature, this effect is not observed but the flow curves are shifted to lower stresses. Furthermore, dynamic recrystallization is observed above 800 °C deformation temperature. To identify the deformation mechanisms as well as the failure mechanisms, the microstructure evolution is studied at 700 °C for different strain values. The microstructure is investigated using light‐optical and secondary electron microscopy (SEM). Local damage by particle fracture and void formation around particles is evident during deformation. Remarkably, the ceramic particles reorient with increasing strain to form a certain banding and therefore a structural anisotropy.
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