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Effect of HIP at 1000–1200 °C on microstructure and properties of extruded Be-Ti composites

Gaisin, Ramil ORCID iD icon 1; Kuksenko, Viacheslav; Duerrschnabel, Michael ORCID iD icon 1; Chakin, Vladimir 2; Goraieb, Aniceto; Vladimirov, Pavel ORCID iD icon 2
1 Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP), Karlsruher Institut für Technologie (KIT)
2 Karlsruher Institut für Technologie (KIT)

Abstract:

Solid titanium beryllide blocks will be used for neutron multiplication in the helium-cooled pebble bed (HCPB) blanket concept of EU DEMO. A combination of hot extrusion of Be-Ti powders and subsequent hot isostatic pressing (HIP) of the obtained Be-Ti composites has been proposed for manufacturing such blocks. This work is devoted to the study of the effect of HIP at 1000–1200 °C on the structure and properties of Be-Ti composites in order to optimize the HIP parameters. The HIP at 1000–1200 °C resulted in an almost single-phase titanium beryllide (TiBe12) with small amounts of Be and other phases, which gradually dissolve with an increase in the HIP temperature. Such a treatment at 1000 and 1100 °C provides a very fine-grained microstructure of TiBe12 with an average grain size of 0.3 and 0.6 μm, respectively. The resulting titanium beryllide is characterized by high microhardness of 1350–1480 HV0.1 depending on the HIP temperature. According to the nanoindentation tests of the Be-Ti composite after HIP at 1100 °C, the indentation modulus of TiBe12 can be estimated as 295 GPa. The fracture toughness of the TiBe12 was determined as 1.5–1.7 MPa·m1/2. ... mehr

Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 03.2022
Sprache Englisch
Identifikator ISSN: 2352-1791
KITopen-ID: 1000146679
HGF-Programm 31.13.04 (POF IV, LK 01) In Vessel Components
Erschienen in Nuclear Materials and Energy
Verlag Elsevier
Band 30
Seiten Art. Nr.: 101128
Schlagwörter Beryllide, Beryllium, Hot isostatic pressing, Extrusion, DEMO
Nachgewiesen in Web of Science
Dimensions
OpenAlex
Scopus

Verlagsausgabe §
DOI: 10.5445/IR/1000146679
Veröffentlicht am 03.08.2022
Originalveröffentlichung
DOI: 10.1016/j.nme.2022.101128
Scopus
Zitationen: 10
Web of Science
Zitationen: 10
Dimensions
Zitationen: 10
Seitenaufrufe: 78
seit 05.08.2022
Downloads: 22
seit 05.08.2022
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