Processing of a Martensitic Tool Steel by Wire-Arc Additive Manufacturing.

Abstract

This work investigates the processability of hot-work tool steels by wire-arc additive manufacturing (DED-Arc) from metal-cored wires. The investigations were carried out with the hot-work tool steel X36CrMoWVTi10-3-2. It is shown that a crack-free processing from metal-cored wire is possible, resulting from a low martensite start (Ms) temperature, high amounts of retained austenite (RA) in combination with increased interpass temperatures during deposition. Overall mechanical properties are similar over the built-up height of 110 mm. High alloying leads to pronounced segregation during processing by DED-Arc, achieving a shift of the secondary hardness maximum towards higher temperatures and higher hardness in as-built + tempered condition in contrast to hardened + tempered condition, which appears to be beneficial for applications of DED-Arc processed material at elevated temperatures.

• Authors: Ulf Ziesing, Jonathan Lentz, Arne Röttger, Werner Theisen, Sebastian Weber
• Journal: Materials (Basel, Switzerland) (Materials (Basel)) Vol. 15 Issue 21 (Oct 22 2022) ISSN: 1996-1944 [Print] Switzerland
• PMID: 36363000 (Publication Type: Journal Article)