Residual stress distribution and elevated temperature fatigue behaviour of laser peened Ti-6Al-4V with a curved surface

•Residual stress distribution was investigated in curved samples of laser peened Ti-6Al-4V.•Elevated temperature (300 °C) fatigue tests were done (R = −1) on similar curved samples.•Induced residual stress distribution was favorably retained at elevated temperature.•Crack initiation site shifted to a depth of ∼ 200 μm with 3 times increase in fatigue life at 400 MPa for the peened samples.•Fatigue striation spacings decreased for the peened samples.