氢蚀下铬钼钢疲劳弯曲裂纹扩展研究

摘要

Fatigue curve crack growth behaviors of Cr-Mo steel in hydrogen eroding environment have been studied comparatively accurately in this article .Fatigue curve crack grow th characteristics with different stress ratios have been worked over .Coefficients transformation rule of fatigue curve crack grow th 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 .%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。