Details

Autor(en) / Beteiligte

• Rashkovets, M.
• Mazzarisi, M.
• Nikulina, A.A.
• Casalino, G.

Titel

Analysis of laser direct stainless steel powder deposition on Ti6Al4V substrate

Ist Teil von

• Materials letters, 2020-09, Vol.274, p.128064, Article 128064

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2020

Quelle

Access via ScienceDirect (Elsevier)

Beschreibungen/Notizen

• •The depositions showed the presence of voids and cracks.•The microstructure showed cellular and columnar dendrite grain shapes.•EDS analysis revealed elements diffusion due to high temperature gradient during the deposition process.•A heterogeneous elements distribution was detected along the deposition interface.•XDR analysis identified the λ + FeTi brittle phases. In this study, the Laser Direct Metal Deposition technique was employed to deposit AISI 316 stainless steel powder on Ti6Al4V substrate. Microstructure characterization and composition distribution were studied by scanning electron and optical microscopy. The elements along the metal deposition were detected by the energy dispersive spectroscopy (EDS). X-ray diffraction (XRD) revealed a mixture of intermetallic compounds, which are responsible for the bond brittleness. The metal deposition had a complete wetting of the grain boundary matrix by the second phase.