Abstract
We evaluate creep property of heat resistant materials and clarify degradation and damage mechanism during creep exposure. We try to propose evaluation method of creep strength, life assessment method and new concept of material design. In order to improve code and standard of power plants, long-term creep strength and microstructure of crept specimens are evaluated based on NIMS Creep Data Sheets.
For thermal power plants, reliability of components under cyclic loading is needed because the use of renewable energy is increasing. We evaluate long-term creep property under cyclic loading for main heat resistant materials.
For nuclear power plants, research and standardization of additively manufactured materials are active in the world.
We evaluate long-term creep property of additively manufactured materials because the creep data of the materials
are insufficient.