Stacking fault effects on dynamic strain aging in a Ni–Co-based superalloy

In this work, statistical analyses are conducted to measure the stacking fault density and stacking fault energy in a Ni–Co-based superalloy at different deformation temperatures and strain rates. High stacking fault density and low stacking fault energy indicate that the dynamic strain aging effects are caused by Suzuki segregation, which is enhanced by serious intersections of stacking faults in the superalloy. These results provide new insight into understanding stacking fault effects on dynamic strain aging in engineering alloys.