Precipitation hardening is one of the most frequently used methods post-processing heat treatments 3D printed tool steel 1.2709, as it increases yield and ultimate tensile strengths steel. Within this work, broad temperature range 250°C – 550°C was tested with five differ-ent holds at each to study effect processing parameters on microstructure mechanical properties. Maraging 1.2709 pro...

This paper studies the multiaxial fatigue behaviour of maraging steel samples produced by selective laser melting. Hollow cylindrical specimens with transverse circular holes are subjected to different in-phase bending-torsion loading scenarios. Fatigue crack initiation sites and angles predicted from first principal stress field. lifetime is computed using a straightforward approach, based on ...