Interfacial characteristics in multi-material laser powder bed fusion of CuZr/316L stainless steel
Journal
CIRP Annals
Journal Volume
73
Journal Issue
1
Start Page
145
End Page
148
ISSN
00078506
Date Issued
2024-01
Author(s)
Abstract
This research investigates the multi-material laser powder bed fusion (MM-LPBF) printing of CuZr/316 L stainless steel (SS) within the same layer using four printing strategies. Printing CuZr first exhibits better quality. Conversely, printing 316 L SS first led to notable cracks due to elevated thermal stress and resulted in a larger diffusion zone due to material convection caused by the Marangoni effect. Material overlapping is effective in reducing the formation of cracks and creating a larger diffusion zone compared to non-overlapping. A topology-optimized liquid cooling heat sink with CuZr core and 316 L SS protective layer was printed to demonstrate electronic cooling applications.
Subjects
Additive manufacturing
Multi-material laser powder bed fusion
Selective laser melting (SLM)
Publisher
Elsevier Inc.
Type
journal article