Mechanical and geometrical characterization of additively manufactured INCONEL® 718 porous structures for transpiration cooling in space applicationsShow others and affiliations
2022 (English)In: Laser 3D Manufacturing IX / [ed] Bo Gu; Hongqiang Chen; Henry Helvajian, SPIE - International Society for Optical Engineering, 2022, Vol. 11992, article id 1199206Conference paper, Published paper (Refereed)
Abstract [en]
The need for ever increasing process temperatures during combustion in space engines and gas turbines to increase efficiency requires the use of thermally resistant materials and novel cooling solutions. For the improved cooling of thermally highly stressed components, the technology of transpiration cooling, in which a cooling medium flows through a porous structure, has been known for a long time. Additive manufacturing and, in particular, laser powder bed fusion (LPBF) offers great potential for the near-net-shape production of porous structures compared to complex conventional manufacturing. In this contribution, porous structures were manufactured and the process parameters were optimized to increase the quality of the pores. The study discloses an adapted exposure parameter set for the improved fabrication of cylindrical pores in an INCONEL® 718 material and the associated mechanical properties of porous and dense components.
Place, publisher, year, edition, pages
SPIE - International Society for Optical Engineering, 2022. Vol. 11992, article id 1199206
Series
Proceedings of SPIE, ISSN 0277-786X, E-ISSN 1996-756X
Keywords [en]
Porous structures, SLM, LPBF, INCONEL 718, Mechanical properties, Geometric accuracy, Transpiration cooling, Aerospace, Mircochannels
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Manufacturing Systems Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-91462DOI: 10.1117/12.2608954ISI: 000836301700005Scopus ID: 2-s2.0-85131215976OAI: oai:DiVA.org:ltu-91462DiVA, id: diva2:1672802
Conference
Laser 3D Manufacturing IX, San Fransisco, United States, January 22-27, 2022
Note
ISBN för värdpublikation: 9781510648555; 9781510648562;
Funder: German Federal Ministry of Education and Research (03ZZ0236B);
2022-06-202022-06-202022-08-19Bibliographically approved