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This paper investigates the FGH95 powder alloy used for turbine discs, focusing on the laser incidence angle based on the disc's tongue and groove structure. It examines how different LSP treatment parameters affect the surface integrity of FGH95 materials and analyzes the residual stress release mechanism post-treatment, establishing an analytical model for this process.The study explores how laser processing parameters and temperature influence tensile fatigue and micro-motion fatigue performance in relation to damage conditions of turbine disc tongues and grooves. Additionally, it analyzes...