Successful doctoral colloquium by Mika León Altmann
![[Translate to English:] Personen vor einem Gebäude - der Mann in der Mitte trägt einen Doktorhut und einen Blumenstrauss in den Händen](/fileadmin/_processed_/5/8/csm_Promotion_Altmann_web_39c3cc4069.jpg)
In his dissertation, Mika León Altmann investigated how targeted adjustments of process parameters in laser additive manufacturing can influence the microstructure of Ti-6Al-4V, and how these changes interact with subsequent hot isostatic pressing. The complex thermal history of the components, shaped by the laser energy input and its dissipation through the remelted material, can cause significant microstructural modifications. These effects are further amplified by geometry-induced heat accumulation zones and variations in layer times.
A central focus of his work was to understand the interactions between process parameters, microstructure, and mechanical properties across all process steps. His research makes an important contribution to improving the performance of additively manufactured Ti-6Al-4V components and also demonstrates strong potential for future locally graded microstructures.