09:20 〜 09:40
[15B-T6-09] Nitrogen-Enhanced Martensitic Cr Steel: Advancing Strength, Corrosion Resistance, and Sustainability in Additive Manufacturing
キーワード：Gas Atomization, Additive Manufacturing, PBF-LB/M
The range of martensitic Cr steels that can currently be processed with PBF-LB/M is considerably
limited. In order to expand and optimize the alloy portfolio of this alloy category, the qualification of a
corrosion resistant martensitic Cr-steel with good processability for additive manufacturing is the focus
of this study. The study covers the entire process chain from alloy development based on X50CrMoV15
steel, powder production via gas atomization, additive manufacturing using PBF-LB/M and
microstructural investigations. Nitrogen is the key element in this concept as it can have a positive effect
on strength, ductility and corrosion resistance and environmental footprint. In addition, N improves
susceptibility to cold cracking in melt based additive manufacturing processes by reducing the MS
temperature.
limited. In order to expand and optimize the alloy portfolio of this alloy category, the qualification of a
corrosion resistant martensitic Cr-steel with good processability for additive manufacturing is the focus
of this study. The study covers the entire process chain from alloy development based on X50CrMoV15
steel, powder production via gas atomization, additive manufacturing using PBF-LB/M and
microstructural investigations. Nitrogen is the key element in this concept as it can have a positive effect
on strength, ductility and corrosion resistance and environmental footprint. In addition, N improves
susceptibility to cold cracking in melt based additive manufacturing processes by reducing the MS
temperature.