Speaker
Description
Retained austenite (RA) is known to influence the printability and resulting microstructure of additively manufactured (AM) tool steels, particularly under low preheating conditions where thermal gradients and cooling rates are high. This study investigates the effect of preheating temperature and selected laser powder bed fusion (LPBF) process parameters on the retained austenite content of a tool steel. Cubic specimens are produced using three predefined parameter sets that have previously yielded high relative density at the expense of reduced build speed, leading to elevated thermal conditions during fabrication. The retained austenite content is quantified in the as printed condition. The results provide insight into the relationship between preheating temperature, thermal history, phase stability, and mechanical response, offering guidance for process strategies aimed at improving printability and microstructural control of medium carbon alloyed tool steels at reduced preheating temperatures.
| Speaker Country | Sweden |
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| Would you like to publish your paper in the special issue of BHM "Berg- und Hüttenmännische Monatshefte" | Yes |