材料工程Issue(11)：38-41,96,5.
汽轮机转子30Cr1Mo1V钢长期服役状态下的高温疲劳行为
Fatigue Behavior of 30Cr1Mo1V Rotor Steel at Elevated Temperature After Long-term Service
摘要
Abstract
The low cycle fatigue and fatigue crack growth rate tests are described in the detail for a steam turbine rotor steel 30CrlMolV which had been in service for 16 years. Three typical sections of the examined rotor, I. E. High-temperature, high-stress and medium-stress, were experimented at 538°C. The test results shows that the property of the high temperature section is degraded most severely and the high stress section takes the second place. The corresponding microstructure observations show that the original sorbite structure decomposed almost completely in high temperature and high stress sections. Carbides were coarsened or spheroidized strikingly, with a continuous chain of large size carbides present in the grain boundary. A few microvoids were found at grain boundary in the high temperature section. These phenomena in microstructure might be the reasons for properties degradation.关键词
30Cr1Mo1V钢/低周疲劳/疲劳裂纹扩展速率/高温退化/长期服役Key words
30Cr1Mo1V rotor steel/ low cycle fatigue/fatigue crack growth rate/ high temperature degradation/ long-term service分类
能源科技引用本文复制引用
严益民,胡正飞,林富生,赵双群..汽轮机转子30Cr1Mo1V钢长期服役状态下的高温疲劳行为[J].材料工程,2012,(11):38-41,96,5.基金项目
国家自然科学基金项目(50871076) （50871076）
上海科委项目(09521101305) （09521101305）
