Thermodynamics-guided alloy and process design for additive manufacturing

Zhongji Sun (), Yan Ma, Dirk Ponge, Stefan Zaefferer, Eric A. Jägle, Baptiste Gault, Anthony D. Rollett and Dierk Raabe
Additional contact information
Zhongji Sun: Max-Planck-Institut für Eisenforschung GmbH
Yan Ma: Max-Planck-Institut für Eisenforschung GmbH
Dirk Ponge: Max-Planck-Institut für Eisenforschung GmbH
Stefan Zaefferer: Max-Planck-Institut für Eisenforschung GmbH
Eric A. Jägle: Universität der Bundeswehr München
Baptiste Gault: Max-Planck-Institut für Eisenforschung GmbH
Anthony D. Rollett: Carnegie Mellon University
Dierk Raabe: Max-Planck-Institut für Eisenforschung GmbH

Nature Communications, 2022, vol. 13, issue 1, 1-12

Abstract: Abstract In conventional processing, metals go through multiple manufacturing steps including casting, plastic deformation, and heat treatment to achieve the desired property. In additive manufacturing (AM) the same target must be reached in one fabrication process, involving solidification and cyclic remelting. The thermodynamic and kinetic differences between the solid and liquid phases lead to constitutional undercooling, local variations in the solidification interval, and unexpected precipitation of secondary phases. These features may cause many undesired defects, one of which is the so-called hot cracking. The response of the thermodynamic and kinetic nature of these phenomena to high cooling rates provides access to the knowledge-based and tailored design of alloys for AM. Here, we illustrate such an approach by solving the hot cracking problem, using the commercially important IN738LC superalloy as a model material. The same approach could also be applied to adapt other hot-cracking susceptible alloy systems for AM.

Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.nature.com/articles/s41467-022-31969-y Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-31969-y

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-022-31969-y

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().