压力容器Issue(10)：22-28,7.DOI:10.3969/j.issn.1001-4837.2014.10.004
P92钢蠕变-疲劳试验的断裂特性分析
Investigation of Fracture Performance for P92 Steel under Creep-Fatigue Load
摘要
Abstract
Creep-fatigue( CF) tests of P92 steel at 600 ℃ under stress-controlled were carried out in this study.The effects of different stress ratios and holding times on CF interaction were investigated by analyzing the experimental data and observing microstructure of the samples.It is shown that cycle life is inversely proportional to the stress ratios and holding times.When the holding times reach a certain value, the stress ratio has little effect on creep-fatigue life.The microstructure of P92 steel is not changed sig-nificantly and still remain the structure of lath martensite.The feature of specimens belongs to ductile dim-ple fracture which dominated by creep damage.关键词
P92钢/蠕变-疲劳/延性韧窝断裂/微观形貌Key words
P92 steel/creep-fatigue/ductile dimple fracture/micro-pattern分类
机械制造引用本文复制引用
王德宪,纪冬梅,陈建钧,王昊,陈乃超..P92钢蠕变-疲劳试验的断裂特性分析[J].压力容器,2014,(10):22-28,7.基金项目
国家自然科学基金项目 （）
