- AutorIn
- Martin Löbel Technische Universität Chemnitz
- Thomas LindnerTechnische Universität Chemnitz
- Robert PippigTechnische Universität Chemnitz
- Thomas Lampke
- Titel
- High-Temperature Wear Behaviour of Spark Plasma Sintered AlCoCrFeNiTi0.5 High-Entropy Alloy
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:ch1-qucosa2-343864
- Quellenangabe
- Entropy Erscheinungsort: Schweiz
Verlag: MDPI
Erscheinungsjahr: 2019
Jahrgang: 21
Heft: 6
E-ISSN: 1099-4300
DOI: 10.3390/e21060582
Artikelnummer: 582 - Erstveröffentlichung
- 2019
- Abstract (EN)
- In this study, the wear behaviour of a powder metallurgically produced AlCoCrFeNiTi0.5 high-entropy alloy (HEAs) is investigated at elevated temperatures. Spark plasma sintering (SPS) of inert gas atomised feedstock enables the production of dense bulk material. The microstructure evolution and phase formation are analysed. The high cooling rate in the atomisation process results in spherical powder with a microstructure comprising two finely distributed body-centred cubic phases. An additional phase with a complex crystal structure precipitates during SPS processing, while no coarsening of microstructural features occurs. The wear resistance under reciprocating wear conditions increases at elevated temperatures due to the formation of a protective oxide layer under atmospherical conditions. Additionally, the coefficient of friction (COF) slightly decreases with increasing temperature. SPS processing is suitable for the production of HEA bulk material. An increase in the wear resistance at elevated temperature enables high temperature applications of the HEA system AlCoCrFeNiTi0.5.
- Andere Ausgabe
- DOI: 10.3390/e21060582
- Freie Schlagwörter (EN)
- high-entropy alloy (HEA), compositionally complex alloy (CCA), spark plasma sintering (SPS), phase composition, microstructure, wear, high temperature
- Klassifikation (DDC)
- 620
- Normschlagwörter (GND)
- Spark Plasma Sintern, Mikrostruktur
- Verlag
- MDPI, Schweiz
- Förder- / Projektangaben
- Deutsche Forschungsgemeinschaft ID:  La-1274/54-1
- Deutsche Forschungsgemeinschaft Open Access Publizieren
ID:  392676956 - Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:ch1-qucosa2-343864
- Veröffentlichungsdatum Qucosa
- 02.07.2019
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch