Evaluation of creep damage progress by metallurgical examination in aged power boiler pressure parts.

Effect of service-simulated aging on the microstructure and properties of casing casting steel (1CrMoV) vis-à-vis remnant life assessment

“…And all the structures having different degrees of deterioration (i.e., varying levels of carbide coarsening) tend to converge to the same strength at very long testing times. Recent investigations [9][10][11][12][13][14][15][16][17] have also shown that steels exposed to 100,000 to 350,000 hours of service yielded comparable creep rupture lives with respect to the unexposed materials, sacrificing room-temperature mechanical properties, such as tensile strength and hardness.…”