Effect of laser shock peening on microstructure and hot corrosion of TC11 alloy

The combination of the high-amplitude compressive residual stresses, crystal defects and the grain refinement induced by LSP can increase the resistance of hot corrosion. LSP induces a large number of crystal defects providing the paths to accelerate the Al ion to the surface to form oxide protective layer and restraining other ion react with oxygen to form outer corrosion layer.306