【摘要】 本文对几种低合金钢在3.5%NaCl 水溶液中的 CF 进行了实验研究。首先在室温下对其抗 CF性能作了比较,进而研究了温度对18Nb 钢 CF 裂纹扩展速率的影响.求出该钢在3.5%NaCl 水溶液中 CF 裂纹扩展激活能为7.4～7.9kcal/mol。认为氧的去极化反应可能是控制18Nb 钢 CF 裂纹扩展速率的主要因素。更多还原

【Abstract】 The corrosion fatigue of some low alloy steels in NaCl aqueous solution was experimentally investigated.The corrosion fatigue properties of the steels at room temperature were studied.Then the influence of temperature on CF crack growth rate for 18Nb steel was studied with the activation energy of CF crack propagation calculated to be 7.4-7.9 kcal/mol.It is thought that the depolarizing reaction of oxygen is probably the principal controlling fac- tor for the propagation of CF crack.更多还原