Characterization of the high-temperature behavior of PBF-EB/M manufactured γ titanium aluminides

Simple item page
dc.contributor.authorTeschke, M.
dc.contributor.authorMoritz, J.
dc.contributor.authorTelgheder, L.
dc.contributor.authorMarquardt, A.
dc.contributor.authorLeyens, C.
dc.contributor.authorWalther, F.
dc.date.accessioned2023-07-13T07:04:39Z
dc.date.available2023-07-13T07:04:39Z
dc.date.issued2022-02-24
dc.description.abstractDue to their high specific strength and temperature resistance, γ-titanium aluminides (γ-TiAl) have a growing importance for automotive and aerospace applications. However, conventional processing is very challenging due to the inherent brittleness of the material. Therefore, new manufacturing techniques and methods have to be established. Additive manufacturing techniques such as electron powder bed fusion (PBF-EB/M) are favored, since they enable near net shape manufacturing of highly complex geometries. The high preheating temperatures, which typically occur during PBF-EB/M, can significantly improve the processability of TiAl and facilitate the fabrication of complex parts. In this study, a previously optimized material condition of the β-solidifying TNM alloy TNM-B1 (Ti-43.5Al-4Nb-1Mo-0.1B) was manufactured by PBF-EB/M. The resulting microstructure, defect distribution and morphology, and mechanical properties were characterized by means of characterization methods, e.g., CT, SEM, light microscopy, hardness measurements, and tensile tests. A special focus was on the mechanical high-temperature behavior. The pronounced sensitivity of the material to defects and internal notches, e.g., due to lack of fusion defects (misconnections) which were found in the as-built condition, was identified as a main cause for premature failure below the yield point due to the low ductility. This failure was analyzed and potential improvements were identified.en
dc.identifier.urihttp://hdl.handle.net/2003/41981
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-23818
dc.language.isoende
dc.relation.ispartofseriesProgress in additive manufacturing;7(3)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/de
dc.subjectAdditive manufacturingen
dc.subjectElectron powder bed fusionen
dc.subjectPBF-EB titanium aluminidesen
dc.subjectMechanical propertiesen
dc.subjectTensile testen
dc.subject.ddc660
dc.subject.rswkRapid Prototyping <Fertigung>de
dc.subject.rswkSelektives Laserschmelzende
dc.subject.rswkTitanaluminidede
dc.subject.rswkMechanische Eigenschaftde
dc.subject.rswkZugversuchde
dc.subject.rswkWerkstoffprüfungde
dc.titleCharacterization of the high-temperature behavior of PBF-EB/M manufactured γ titanium aluminidesen
dc.typeTextde
dc.type.publicationtypeArticlede
dcterms.accessRightsopen access
eldorado.secondarypublicationtruede
eldorado.secondarypublication.primarycitationTeschke, M., Moritz, J., Telgheder, L. et al. Characterization of the high-temperature behavior of PBF-EB/M manufactured γ titanium aluminides. Prog Addit Manuf 7, 471–480 (2022). https://doi.org/10.1007/s40964-022-00274-xde
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.1007/s40964-022-00274-xde

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
s40964-022-00274-x.pdf
Size:
1.83 MB
Format:
Adobe Portable Document Format
Description:
DNB
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
4.85 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Fachgebiet Werkstoffprüftechnik