摘要
对退火态和正火+回火态P9钢的高温蠕变性能及组织演变过程进行研究。通过对650℃不同应力下P9钢的蠕变曲线分析发现,其稳态蠕变速率与蠕变断裂时间满足Monkman-Grant关系。同时介绍蠕变安全性评估方法和连续蠕变损伤机制,讨论了P9钢的蠕变损伤机制。
Creep behavior and microstrueture evolution of P9 steel under annealed and normalized state and tempered state were studied. It is found out that the steady creep rate and creep rupture time of P9 steel meet the Monkman-Grant relation through the creep curves under different stress at 650℃. The creep damage criterion and continuum creep damage mechanics were introduced and the creep damage mechanism of P9 steel under different heat treatment states was discussed.
出处
《金属热处理》
CAS
CSCD
北大核心
2013年第5期1-5,共5页
Heat Treatment of Metals
基金
国家自然科学基金重点项目(51034011)
上海市科委项目(10dz1201200)
