摘要
针对压力容器用低合金钢在湿H2 S环境下的应力腐蚀开裂的机理 ,结合断裂力学方法推导了 16MnR、15MnNbR、0 7MnCrMoVR三种材料的氢诱发开裂的临界浓度及氢滞后断裂的临界应力场强度因子KISCC的估算表达式 ,与实验值进行了对比验证 ,并对极限浓度的概念进行了讨论。
With respect to SCC mechanism of low-alloy steel for pressure vessel under wet H_2S environment, the formulae for estimating critical concentration for hydrogen-induced cracking and critical stress intensity factor K _ ISCC for hydrogen-retarded cracking of the three materials 16MnR, 15MnNbR and 07MnCrMoVR were derived in combination with fracture mechanics method and were verified by comparison with experimental values, and the concept of limit concentration was discussed in this paper.
出处
《压力容器》
2004年第3期1-5,共5页
Pressure Vessel Technology
基金
国家"九五"重点科技攻关专题 (96-918-0 2 -0 4)
社会公益基金 (0 43GS)资助
