摘要
高温部件长期在高温严酷环境和载荷作用下,蠕变和疲劳是制约其使用寿命的重要因素,成为高温结构强度领域的关键问题,近年来日益受到研究者们的高度关注.本文回顾了实际高温结构部件和材料的失效机制、损伤评估以及寿命预测等方面的研究进展,着重介绍了本课题组在高温蠕变和疲劳领域的最新研究成果,并对该领域今后的发展方向进行了展望.
For the hot components suffering elevated temperature and loading conditions, creep and fatigue act as the decisive factors in controlling its service life. They＇ve been the critical issues in the field of strength of high temperature structures, which has drawn increasing attention of researchers in recent years. In this paper, advances on the creep and fatigue studies of actual high temperature structures and materials have been summarized from mechanical viewpoint, including the failure mechanisms, damage evaluation, life prediction and so on. Further, some new fruits achieved by our group in the field of creep and fatigue at high temperatures are introduced. Finally, we present further directions in this research field that need to be extended in future work.
出处
《固体力学学报》
CAS
CSCD
北大核心
2010年第6期696-715,共20页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金项目(10872105
51071094)资助
关键词
蠕变
损伤
疲劳失效准则
镍基单晶合金
再结晶
creep, damage, fatigue failure criteria, nickel-based single crystal superalloy, surface recrystallization
