Yield strength and brittle-to-ductile transition of boron-nitride and gallium-nitride

While the cubic-structured nitrides of Ga and B have many potential applications, little is known about their yield strength and brittle-to-ductile transition (BDT). Predictions are here obtained for the temperature dependence of the critical shear stress and the BDT temperatures of crystals of both...

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Veröffentlicht in:	Scripta Materialia 1999-08, Vol.41 (6), p.583-587
Hauptverfasser:	Kamimura, Y., Kirchner, H.O.K., Suzuki, T.
Format:	Artikel
Sprache:	eng
Schlagworte:	BORON NITRIDES Brittle BRITTLE-DUCTILE TRANSITIONS BRITTLENESS Compound semiconductors Condensed matter: structure, mechanical and thermal properties Ductile Exact sciences and technology Fatigue, brittleness, fracture, and cracks Fracture GALLIUM NITRIDES MATERIALS SCIENCE Mechanical and acoustical properties of condensed matter Mechanical properties of solids Physics STRESSES TEMPERATURE DEPENDENCE Yield phenomena YIELD STRENGTH
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Beschreibung
Zusammenfassung:	While the cubic-structured nitrides of Ga and B have many potential applications, little is known about their yield strength and brittle-to-ductile transition (BDT). Predictions are here obtained for the temperature dependence of the critical shear stress and the BDT temperatures of crystals of both compositions, using the universal relation for tetrahedrally-bonded crystals. (AIAA)
ISSN:	1359-6462 1872-8456
DOI:	10.1016/S1359-6462(99)00192-X