Experimental Research on Ultrasonic Vibration Finishing Performance of Ultra-High Strength Steel
Ultrasonic vibration finishing can effectively improve the strength,fatigue resistance and corrosion resistance of the workpiece,thereby prolonging the service life of the machined parts.Ultrasonic vibration finishing is carried out on the 30CrMnSiNi2 A Ultra-High Strength Steel samples of typical difficult-to-machine materials for aircrafts.Through the tests of surface residual stress,micro-hardness,tensile test,and fatigue test,it is verified that the surface residual stress state of the sample under ultrasonic vibration finishing process is significantly improved,the structure is finer,and the fatigue performance is effectively improved.And provide a new preparation process plan to meet the long-life design indicators proposed by airframe structure of the new generation aircraft.
ultra-high strength steelultrasonic vibration finishingfatigue life
万方数据
维普
