氢蚀下铬钼钢疲劳弯曲裂纹扩展研究  

Study on Fatigue Curve Crack Growth Behaviors of Cr-Mo Steel in Hydrogen Eroding Environment

作　　者：杨大鹏[1,2] 赵辉[1] 赵耀[2] 

机构地区：[1]郑州职业技术学院机械工程系,郑州450121 [2]华中科技大学船舶与海洋工程学院,武汉430074

出　　处：《武汉理工大学学报（交通科学与工程版）》2014年第2期364-366,共3页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金重大研究计划项目资助(批准号:91016026)

摘　　要：文中较精确地研究了在氢腐蚀环境中铬钼钢疲劳弯曲裂纹扩展行为.重点考察了在不同应力比情况下的氢腐蚀疲劳弯曲裂纹扩展特性,并总结出相应疲劳弯曲裂纹扩展公式中系数的变化规律.从而为船舶与海洋工程和石油化工设备的寿命评估、安全评定以及压力容器的可靠性设计提供必要的理论模型和计算数据.Fatigue curve crack growth behaviors of Cr-Mo steel in hydrogen eroding envtronment nave been studied comparatively accurately in this article. Fatigue curve crack growth characteristics with different stress ratios have been worked over. Coefficients transformation rule of fatigue curve crack growth formula have been summed up . Essential theoretical models and calculating datas have been provided for life span evaluation and security assessing of shipping ＆ ocean engineering and petroleum chemical plant equipment and pressure vessel dependability design , accordingly.

关 键 词：氢腐蚀 弯曲裂纹 铬钼钢 疲劳 扩展特性 

分 类 号：TG1[金属学及工艺—金属学]