Creep Life Prediction of Heat-resistant Steel using Kachanov Model

The accurate prediction of creep life is very important for the safety of the equipment used at high temperature. A series of creep tests of modified 9Cr-1Mo heat-resistant steel were carried out by using creep specimens machined from the plate at the temperatures of 565°C with stress ranging from 200 to 250MPa. The creep life of modified 9Cr-1Mo heat-resistant steel was estimated using the Kachanov creep damage model. The results show that the Kachanov creep damage model can be used to predict the creep life well.