Influence of Long-term Service Exposure on Structure and Properties of High Temperature Steels and Alloys

摘要：

Results of studies on mechanical properties, long- term durability, thermal fatigue resistance and microstructure of metal blades made from various steels and Ni-based super alloys after long-time (up to 100000h) main gas line exposure conditions are presented. The data developed and the calculations of stress-strain state of the blades were used as the basis for a proposed of their projected lifetime. An extrapolation method using long durability curves based on a lifetime of 300000h was developed and is illustrated with an example of a 12％ Cr steel.

关键词： Steel Super alloy High temperatures Lifetime Blades Microstructure Mechanical properties

作者: Leonid Getsov Galina Pigrova Alexandr Rybnikov Elena Manilova

作者单位: NPO CKTI, St. Petersburg 194021 Politechnicheskaya 24, Russia NPO CKTI, St. etersburg 194021 Politechnicheskaya 24, Russia

会议类型: 国际会议

会议名称: 结构、材料与环境健康监测国际会议(International Conference on Health Monitoring og Structure,Material and Environment)

会议地点: 南京

会议语种:英文

页码: 1121-1127

在线出版日期: 2007-10-16（万方平台首次上网日期，不代表论文的发表时间）