Experimental and numerical investigations on the influence of cold expansion on low cycle fatigue life of bolt holes in aeroengine superalloy disk at elevated temperature

•Cold expansion on nickel based superalloy is carried out.•The fatigue life of GH4169 bolt hole increases by 2.1–3.5 times.•The compressive residual stress is retained at 600 °C.•The combination of the critical distance theory and Smith-Watson-Topper multiaxial fatigue criterion gives good predictions.