AI Article Synopsis
- Highly porous nickel-based superalloys, specifically Hastelloy-X, are being explored as alternatives to honeycomb structures in gas turbine engine seals due to their favorable properties.
- The study focuses on a space holder method for producing these materials, highlighting its economic and ecological advantages, and uses spherical Hastelloy-X powders combined with carbamide particles.
- The research includes advanced inspections like X-ray computed tomography and tests on the mechanical properties of the porous samples, revealing how different levels of porosity (50%, 60%, and 70%) impact their compressive strength.
Article Abstract
Highly porous nickel-based superalloys appear as attractive candidates to be applied e.g. as seals in gas turbine engines instead of honeycomb structures. Among various methods of producing open-porous materials, a space holder approach provides number of benefits regarding economic and ecological aspects of production. In this work, the pioneering results of microstructure and mechanical properties analyses of highly porous Hastelloy-X nickel superalloy produced by the space holder approach, are presented. The materials were fabricated by using spherical fine Hastelloy-X powders and carbamide particles as batch materials. A multi-step powder metallurgy and thermomechanical processing was applied to produce open porous samples having a total volumetric porosity of 50, 60 and 70%. The produced materials were subjected to non-destructive (X-ray computed tomography) and metallographic inspections. Mechanical properties of the porous Hastelloy-X samples were examined in static room temperature compression tests, to discuss the effect of obtained porosity on compressive response.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11697248 | PMC |
| http://dx.doi.org/10.1038/s41598-024-84321-3 | DOI Listing |
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