Mechanisms, strategies and materials in support-free low temperature powder bed fusion

Drummer D, Schlicht S (2025)

Publication Language: English

Publication Type: Conference contribution, Conference Contribution

Publication year: 2025

Event location: Philadelphia, PA US

Abstract

Powder bed fusion processes are among today’s few industrially established additive manufacturing processes. Present power bed fusion process strategies either focus on the application of elevated powder bed temperatures, found in the quasi-isothermal processing of semi-crystalline polymers, or the use of support structures, prevailing in the manufacturing of metals. Motivated by both technological, geometrical, and ecological limitations, cold, support-free processes are required to address intrinsic thermomechanical material properties, such as crystallization shrinkage and thermal shrinkage for minimizing the distortion of manufactured parts.

The present contribution provides an overview over existing approaches for the targeted compensation of volumetric shrinkage on the mesoscale. By addressing both mesoscopic phenomena and the macroscale application of scale-invariant processing strategies, we provide insights into the interaction of the melt pool formation and its discrete crystallization, the targeted compensation of thermal shrinkage and material-specific challenges, such as the intermediate occurrence of metastable material phases.

Discretized low temperature PBF strategies can be shown to provide the potential for significantly enhancing the additive manufacturing of nucleated and filled materials, high performance thermoplastics as well as to optimize the re-use and facilitated processing of thermoplastic elastomers.

Authors with CRIS profile

Dietmar Drummer Lehrstuhl für Kunststofftechnik (LKT) Samuel Schlicht Lehrstuhl für Kunststofftechnik (LKT)

How to cite

APA:

Drummer, D., & Schlicht, S. (2025). Mechanisms, strategies and materials in support-free low temperature powder bed fusion. In Proceedings of the ANTEC 2025. Philadelphia, PA, US.

MLA:

Drummer, Dietmar, and Samuel Schlicht. "Mechanisms, strategies and materials in support-free low temperature powder bed fusion." Proceedings of the ANTEC 2025, Philadelphia, PA 2025.

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