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

• Published in: International journal of fatigue Vol. 156; p. 106641
• Main Authors: Praveenkumar, K., Mylavarapu, Phani, Sarkar, Aritra, Isaac Samuel, E., Nagesha, A., Swaroop, S.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.03.2022; Elsevier BV
• Subjects: Compressive properties; Crack initiation; Crack propagation; EBSD; Elevated temperature fatigue; Fatigue life; Grain refinement; High temperature; Laser peening; Laser shock processing; Lasers; Materials fatigue; Misalignment; Residual stress; S-N curve; Stress distribution; Stress relaxation; Striations; Titanium base alloys; S-N curve; Elevated temperature fatigue; Residual stress; EBSD; Laser peening

•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...