Creep-to-rupture of 9%Cr steel T91 in air and oxygen-controlled lead at 650 °C

This article reports results of uniaxial creep-to-rupture experiments at static loads ranging from 100 to 200 MPa on ferritic–martensitic steel T91 in stagnant lead at 650 °C and oxygen concentration co in a narrow range around 10−6 mass%. Respective experiments in stagnant air have been performed for comparison. The steel showed almost no difference in creep performance in oxygen-controlled lead and air at 650 °C. No dissolution attack and no lead penetration were found on the steel.