Brazeability of similar hybrid joint compounds consisting of additively manufactured and conventional material grades

• Applicant: Professor Dr.-Ing. Wolfgang Tillmann
• Subject Area: Production Automation and Assembly Technology
• Term: from 2018 to 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 407147480

• Final Report Year: 2024

Final Report Abstract

Within the research project additive and hybrid brazed joints made from conventionally cast (K) and laser-melted materials (SLM) were investigated merely. The materials used were stainless steel 316L and tool steel 1.2709. The objective was to conduct a characterization of the brazed joints and to compare them with joints made exclusively using the SLM process. The results show that the fabrication and quality of the brazed joints strongly depend on the manufacturing method and the heat treatment of the materials to be joined. In the SLM material, diffusion processes occur more intensively, which affect the brazing suitability.

Publications

• Investigation of joints from laser powder fusion processed and conventional material grades of 18MAR300 nickel maraging steel. Welding in the World, 65(7), 1323-1331.
  Tillmann, W.; Wojarski, L. & Henning, T.
  
• Influence of different surface activation methods on the wetting behavior of nickel-based brazing alloys on laser-beam melted austenitic stainless steel 316L. 23. Werkstofftechnisches Kolloquium
  Tillmann W., Bültena J. & Wojarski L.
  
• Mechanical-technological properties of laser welded joints from Austenitic Chromium Nickel Steel AISI 316L (X2CrNiMo17-12-2). 5th Materials Chain International Conference
  Tillmann W., Bültena J., Ebady A. Z. & Henning T.
  
• Vacuum Brazing of 18MAR300 Nickel Maraging Steel Joints Based on Additively Manufactured and Conventional Material Grades. steel research international, 94(11).
  Tillmann, Wolfgang; Henning, Tim; Wojarski, Lukas & Bültena, Julia
  
• Wetting behaviour of nickel-based brazing alloy BNi-5a on conventionally cast and laser-melted austenitic stainless steel 316L. Journal of Materials Research and Technology, 33, 6701-6713.
  Tillmann, W.; Bültena, J.; Wojarski, L.; Zajaczkowski, J.; Donnerbauer, K. & Walther, F.