Details

Autor(en) / Beteiligte

• Madapana, Dileep
• Ramadas, Harikrishnan
• Nath, Ashish Kumar
• Dutta Majumdar, Jyotsna

Titel

Studies on Laser Shock Peening on Nanomechanical and Mechano-Chemical Properties of Titanium Alloy (Ti6Al4V)

Ist Teil von

• JOM (1989), 2023, Vol.75 (1), p.109-119

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Ti-6wt.%Al-4wt.%V was subjected to laser shock peening using a pulsed Nd:YAG laser, and its effect on microstructure, nanomechanical property, and mechanochemical properties were studied in detail. Laser processing was carried out in water immersion media covering the surface with PVC black tape (120 µm), under a varied power density between 2 GW/cm 2 and 10 GW/cm 2 , and a pulse intensity of 574 pulses/cm 2 . Laser shock peening caused an increase in surface roughness, refinement of microstructure in terms of increased area fraction of low-angle grain boundaries, and the introduction of compressive residual stresses (−50.12 MPa to −296 MPa) as compared to tensile residual stress of an untreated sample (+ 134.21 MPa). The detailed study of mechanochemical properties in terms of tribo-corrosion behavior was undertaken by measuring the kinetics of material removal in the presence of simulated body fluid (SBF) solution. There was a reduction in the coefficient of friction (0.29 to 0.34) and volume of material removal (4.5–3.4 × 10 –11 m 3 ) for laser shock-peened Ti6Al4V as compared to as-received Ti6Al4V.