Life evaluation model for fretting wear of 690 alloy heat transfer tube in corrosion environment

The invention belongs to the technical field of fretting wear of 690 alloy heat transfer tubes, and particularly relates to a life evaluation model for fretting wear of a 690 alloy heat transfer tube in a corrosion environment. The method comprises the following steps: performing a fretting wear test on the 690 alloy heat transfer tube in a corrosion environment to obtain the wear volume of the heat transfer tube; the method comprises the following steps of: firstly, analyzing a wear volume, finding out parameters which have great influence on the wear volume, then coupling corrosion factors into an original Archard model to correct the original model, and finally substituting test data into a new model, and fitting by adopting a multiple linear regression mode to obtain coefficients under different test parameters, the 690 alloy heat transfer tube wear model under the corrosion environment can be obtained. Aiming at the condition that the Archard model is not suitable for actual wear evaluation of a nuclear