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在腐蚀疲劳试验基础上， 研究了０Ｃｒ１８Ｎｉ９ 钢在ＮａＣｌ溶液中的扩展行为， 分析了应力比Ｒ和加载频率ｆ 对腐蚀疲劳裂纹扩展速率的影响， 提出了环境加速因子Ｃ （Ｒ， ｆ）， 进而给出了一种反映腐蚀疲劳裂纹扩展速率ｄａ／ｄＮ～ （ΔＫ， ｆ， Ｒ） 的数学模型。该模型经试验验证， 满足工程要求
Based on the corrosion fatigue test, the behavior of 0Cr18Ni9 steel in NaCl solution was studied. The effect of stress ratio R and loading frequency f on the corrosion fatigue crack growth rate was analyzed. The environmental acceleration factor C (R, f) A mathematical model reflecting corrosion fatigue crack growth rate da / dN ~ (ΔK, f, R) is given. The model has been verified by experiments to meet the engineering requirements