Abstract
In order to obtain the optimum fatigue performance, 35CrMo steel was processed by different heat treatment procedures. The microstructure, tensile properties, fatigue properties, and fatigue cracking mechanisms were compared and analyzed. The results show that fatigue strength and yield strength slowly increase at first and then rapidly decrease with the increase of tempering temperature, and both reach the maximum values at a tempering temperature of 200 °C. The yield strength affects the ratio of crack initiation site, fatigue strength coefficient, and fatigue strength exponent to a certain extent. Based on Basquin equation and fatigue crack initiation mechanism, a fatigue strength prediction method for 35CrMo steel was established.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Liaoning Province
Research on Lifetime Prediction of Non-rotating Parts of Pump Turbine Unit Based on Rotor-Stator Interaction (RSI), Fluid-Structure Coupling and Fracture Mechanics
Subject
General Materials Science,Metals and Alloys
Cited by
13 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献