金属材料の経年変化と寿命予測(<小特集>劣化・老化とライフサイクル)

概要

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Creep behaviour of metallic materials at high temperature is introduced. Micro-structure of the materials changes with ageing at high temperature. Because creep strength mechanisms depend on the micro-structure, the creep deformation is directly affected by such as micro-structural changes, and the fracture aspect is also changed. Therefore, life prediction should be made by taking account of micro-structural change and fracture mechanism change. However, the micro-structural changes of engineering heat-resistant steels and alloys are very complicated, and the creep deformation and fracture behaviour is also complicated depending on the micro-structural changes. The development of simulation technology is desired at high temperature strength research field in order to understand the dynamic relationship between micro-structure change, creep deformation and fracture.
日本シミュレーション学会の論文
1996-03-15