14th International Conference on Shot Peening

Gradient shot peening for additive manufactured parts 

E. Maleki, S. Bagherifard, S. Sgarbazzini, M. Bandini, M. Guagliano 

Department of Mechanical Engineering, Politecnico di Milano, Milano, Italy 

erfan.maleki@polimi.it; sara.bagherifard@polimi.it; simone.sgarbazzini@mail.polimi.it mario.gaugaliano@polimi.it 

Peen Service Srl, Bologna, Italy 

m.bandini@peenservice.it 

Introduction 

Laser powder bed fusion (LPBF), as one of the popular additive manufacturing (AM) technologies, offers lots of potetials in fabrication of parts with complex geometries. However, the layer-by-layer nature of fabrication in LPBF results in the formation of various internal and surface defects. Hence, applying post-processing methods is essential to modulate the negative influences of the these defects on the mechanical properties of LPBF materials [1]. 

Objectives 

In present study, effects of gradient severe shot peening (GSSP) as a novel mechanical surface treatment are investigated on fatigue behavior improvement of LPBF AlSi10Mg samples.