jats:titleAbstract</jats:title> jats:pThe creep responses of the superalloy CMSX-4 under thermal cycling conditions (900 °C to 1050 °C) and constant load (jats:inline-formula jats:alternatives jats:tex-math$$ \sigma_{0} = 200 MPa $$</jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> mml:mrow mml:msub mml:miσ</mml:mi> mml:mn0</mml:mn> </mml:msub> mml:mo=</mml:mo> mml:mn200</mml:mn> mml:miM</mml:mi> mml:miP</mml:mi> mml:mia</mml:mi> </mml:mrow> </mml:math> </jats:alternatives> </jats:inline-formula>) were analyzed using TEM dislocation analysis and compared to the modeled evolution of key creep parameters. By studying tests interrupted at different stages of creep, it is argued that the thermal cycling creep rate under these conditions depends on the creation of interfacial dislocation networks and their disintegration by the jats:italicγ</jats:italic>′-shear of dissimilar Burgers vector pairs.</jats:p>