Fracture Modes in MoSi sub 2

Fracture Modes in MoSi sub 2

The room-temperature fracture behavior of polycrystalline MoSi sub 2 was characterized using Vickers indentation fracture. Fracture analysis was aided by the optically active grain structure of MoSi sub 2 revealed under polarized light. Radial crack propagation from indentations was found to be pred...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of the American Ceramic Society 1992-06, Vol.75 (6), p.1682-1684
Hauptverfasser: Wade, R K, Petrovic, J J
Format: Artikel
Sprache:eng
Schlagworte:
360103 - Metals & Alloys- Mechanical Properties
360104 - Metals & Alloys- Physical Properties
664400 - Experimentally Derived Information on Atomic & Molecular Properties- (1992-)
ANISOTROPY
ATOMIC AND MOLECULAR PHYSICS
BEAMS
CRACK PROPAGATION
CRYSTAL STRUCTURE
CRYSTALS
FRACTURE MECHANICS
GRAIN BOUNDARIES
MATERIALS SCIENCE
MECHANICS
MICROSTRUCTURE
MOLYBDENUM COMPOUNDS
MOLYBDENUM SILICIDES
POLARIZED BEAMS
POLYCRYSTALS
REFRACTORY METAL COMPOUNDS
SILICIDES
SILICON COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VICKERS HARDNESS
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The room-temperature fracture behavior of polycrystalline MoSi sub 2 was characterized using Vickers indentation fracture. Fracture analysis was aided by the optically active grain structure of MoSi sub 2 revealed under polarized light. Radial crack propagation from indentations was found to be predominantly transgranular. The approximate indentation fracture toughness of MoSi sub 2 was 3 MPa /m exp 0.5 , while the measured hardness was 8.7 GPa. Fracture behavior is believed to be controlled by anisotropy and cleavage energy of the tetragonal MoSi sub 2 crystal structure.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1151-2916.1992.tb04246.x