Effect of laser peen forming process parameters on bending and surface quality of Ti-6Al-4V sheets

Laser peen forming (LPF) is a metal process that utilizes laser-induced mechanical shock waves to form desired shapes or modify bent structures. The present work focuses on the applicability of LPF Ti-6Al-4V sheets, identify an optimal parameter window and achieve bending without compromising surface quality within peened region. effect parameters, i.e. laser power density, overlap, type sacrificial overlay, number peening sequences was investigated for specimens with different thicknesses. density were most influential parameters affect specimens. Using overlay has significant Surface after assessed by measuring roughness in In experiments black titanium oxide residue region observed additionally, small micro-cracks found near Further characterization revealed average crack length increased increase density. Two possible combinations identified obtain region, where resulted no damage. Furthermore, residual stresses determined at various incremental hole-drilling method