High cycle fatigue (HCF) induced failures in aircraft gas turbine and rocket engine turbopump blades is a pervasive problem. Single crystal nickel turbine blades are being utilized in rocket engine turbopumps and jet engines throughout industry because of their superior creep, stress rupture, melt resistance, and thermomechanical fatigue capabilities over polycrystalline alloys. Currently the m...

Many engineering metals are polycrystalline, as such the elasticity, crystalline orientation and grain distribution cardinal factors in determining physical properties of material. The can be measured using a number different techniques by subset these (electron back scatter diffraction, spatially resolved acoustic spectroscopy). These measurements routinely deployed materials development. Howe...

Abstract This study investigated the stress relaxation and fatigue life strength of laser-peened single-crystal nickel superalloy specimens compared to unpeened shot-peened following hot corrosion exposure then testing. The were treated by conventional laser peening a new cyclic plus thermal microstructure engineering process. latter treatment supports benefit unique process involving applicati...