Research Progress on Wear and Contact Fatigue Behavior of Bainitic Rail
Rail wear and rolling contact fatigue,a main damage form during wheel-rail contact,has a vital impact on railway track safety and mainte-nance.With the increase of axle load of trains,the fatigue damage of bainite rail is becoming increasingly prominent,which seriously endan-gers the driving safety.This summary reviewed the research progress of wear and fatigue damage of bainite rail at home and abroad in recent years,the wear and rolling contact fatigue properties of bainite rail and the competitive relationship between them are described,and the test re-sults are compared with those of pearlitic rail,the effects of different factors(microstructure,service conditions,environmental media)on the wear and rolling contact fatigue properties of bainite rail are summarized.The key research directions in the future are proposed as follows:The preparation of stable residual austenite structure based on chemical composition regulation and heat treatment process parameter optimization.Study on the applicability of bainite rail under different service conditions.Study on the performance of bainite rail in corrosive,high and low tem-perature environment.
万方数据
维普
