Long-Term Creep and Rupture Properties of Heat Resisting Steels and Alloys

摘要

The present status of NRIM creep data sheet project an the recent activities of long-term creep an rupture studies on heat rsisting steels are described. The project ahs been continued to produce long-term data such as 100,000 hcreep rupture strength for 47 kinds fo principal heat resisting steels and alloys, inclding welded joints. The long-term creep deformation behavior, microstructural evolution during creep and inherent creep strength at extremely long times ahve been investigated for the materials. The behavior has been shown to be complicated at long times, reflecting complicated microstructural evolution during creep.