Insights into the precipitation-dominated creep behavior of a 25Cr20Ni-Nb-N austenitic heat-resistant steel via interrupted creep

The creep behavior of austenitic heat-resistant steels (A-HRS) determines their application and safe operation in modern advanced ultra-supercritical power plants. To date, understating of the creep behavior and corresponding microstructural evolution has relied on creep rupture tests, therefore, the evolution of complex precipitates and their effects on properties remains debated. Here, a series of interrupted and ruptured creep tests were …