Experimental Study of Multiaxial Stress State on Creep Rupture Life and Ductility of P91 Steel

Many high-temperature components developed using uniaxial creep data are now experiencing multiaxial stress states due to geometrical changes, material behavior and loading environment conditions. In order to evaluate the service life of such components under multiaxial stress conditions, it is important to predict the creep rupture life. In this work, the notched bar creep testing has been performed at 600 °C on the ex-service P91 material....