Jan Haubrich

TL;DR: In this article, the porosity is investigated by 2D and 3D methods aiming to identify the mechanisms of void formation, their morphology as well as volume fraction as a function of the energy density.

TL;DR: The present investigations reveal a promising solidification and cooling path for α formation not yet exploited, in which α does not inherit the usual crystallographic orientation relationship with the parent β phase, and the associated decrease in anisotropy represents a step forward toward a next generation of titanium alloys for AM.

TL;DR: In this paper, the microstructure evolution in selective laser melted (SLM) Ti-6Al-4V was studied in the as-built condition and after sub-transus heat treatments between 400°C and 800°C focusing on elemental partitioning and the role of lattice defects on precipitation of the β phase.

TL;DR: In this work, an intensified intrinsic heat treatment is applied during selective laser melting of Ti-6Al-4V powder using a scanning strategy that combines porosity-optimized processing with a very tight hatch distance, reflecting a contribution towards simultaneous selective lasers melting-manufacturing and heat treatment for fabrication ofTi-6 alumnus parts.

TL;DR: It is observed that the higher the laser energy density during fabrication, the lower the lattice strains, and a relief of lattice strain takes place after heat treatment.