Long-term creep and rupture properties and microstructural changes of heat resisting steels

摘要

The present status of MRIM Creep Data Sheet project and the recent activities of long-term creep and rupture studies on heat resisting steels are described. The probject has been continued to produce long-term data such as 100 000 h-creep rupture strength for 44 kinds of commercial heat resisting steels and allows. The long-term creep and rupture properties, microstructural evolution during creep and creep crack growth behavior have been investigated for the materials. The behavior has been shows to be comblicated at long times, reflecting complicated microstructural evolution during creep.