The influence of silicon on the strength and fracture toughness of molybdenum
- MoSi alloys containing up to 1 wt.% Si were fabricated by powder-metallurgical processing and their lattice parameters, elastic constants, densities, grain sizes, strengths, ductilities, and fracture toughness values were measured. The yield strength was insensitive to the grain size, i.e., a HallPetch relationship was not observed. Generally, Si additions caused pronounced solid solution strengthening. However, for small Si concentrations (≤0.1 wt.%) solid solution softening was observed at room temperature and below. With increasing Si concentration, the room temperature ductility and fracture toughness dropped precipitously. This is attributed to the increase in strength and a transition from transgranular to intergranular fracture.
Autor*innen: | D. Sturm, M. Heilmaier, J.H. Schneibel, P. Jéhanno, Birgit SkrotzkiORCiD, H. Saage |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Materials science and engineering A |
Jahr der Erstveröffentlichung: | 2007 |
Verlag: | Elsevier |
Verlagsort: | Amsterdam |
Jahrgang/Band: | 463 |
Ausgabe/Heft: | 1-2 |
Erste Seite: | 107 |
Letzte Seite: | 114 |
Freie Schlagwörter: | Hall-Petch relationship; Molybdenum; Solid solution softening; Solid solution strengthening |
ISSN: | 0921-5093 |
ISSN: | 1873-4936 |
Verfügbarkeit des Dokuments: | Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access") |
Bibliotheksstandort: | Sonderstandort: Publica-Schrank |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 24.05.2007 |