通过对金属腐蚀T-H曲线和温湿谱的腐蚀损伤研究,找到一种用腐蚀损伤计算金属日历寿命的原理和模型。这种计算金属日历寿命的模型,只要给出真实使用环境下的腐蚀T-H曲线和温湿谱,就可计算出金属真实使用日历寿命。通过对30CrMnSiA钢的日历寿命实例计算结果与真实环境下的腐蚀试验结果的比较得到,相对误差是17.5%,这说明该日历寿命计算模型和方法是有效的。 Through the study on the corrosion damage of metal corrosion T-H curve and temperature-humidity spectrum, a principle and model for calculating metal calendar life with corrosion damage is found. This model of metal calendar life, as long as the actual use of the environment under the corrosion T-H curve and temperature and humidity spectrum, you can calculate the true life of the calendar using the metal. The relative error is 17.5% by comparing the calculation results of the calendar life of the 30CrMnSiA steel with the corrosion test under the real environment, which shows that the calendar life calculation model and method are effective.