Different post-processing methods to improve fatigue properties of additively built Ti-6Al-4V alloy

The Effects of Submerged Laser Peening, Cavitation Peening, and Shot Peening on the Improvement of the Torsional Fatigue Strength of Powder Bed Fused Ti6al4v Produced Through Laser Sintering

“…It has been reported that the building direction during the PBF affects fatigue strength [13,14], and mechanical surface treatments such as shot peening (SP) improve the fatigue strength of PBF metals [13,14]. Hot isostatic pressing (HIP) can reduce the crack propagation rate [15,16] and improve fatigue properties [17][18][19][20][21][22][23]. However, HIP cannot reduce or remove surface defects [24].…”