2D characterization at submicron scale of crack propagation of 174-PH parts produced by Atomic Diffusion Additive Manufacturing (ADAM) process

In this study, a Surface Mechanical Attrition Treatment (SMAT) is applied to a 17-4PH single edge notched tension (SENT) sample made by Atomic Diffusion Additive Manufacturing (ADAM). Grating of gold nanoparticles allowing multiscale characterizations is deposited on the surface of specimen by electron beam lithography. In-situ tensile test is carried out and images of the surface are recorded. The crack propagation is followed and the local parameters influencing the propagation are analyzed. The evolutions at the microstructure scale are compared with the macroscopic behavior of the specimen. (C) 2021 The Authors. Published by Elsevier B.V.

Automated summary

In this study, the SMAT treatment was applied to a 17-4PH SENT sample made by ADAM, with the deposition of gold nanoparticles on the specimen's surface for multiscale characterizations. In-situ tensile tests were conducted to track crack propagation and analyze the local parameters influencing it, comparing microstructure scale evolutions with the macroscopic behavior of the specimen.