Effects of R-ratio on fatigue crack growth in a Ti-24Al-11Nb alloy

The microscopic fatigue crack behavior in a Ti-24Al-11Nb alloy was investigated. Particular attention was given to the path of the fatigue crack through the microstructure, the fracture mode, and the effects of R-ratio and crack closure on the fatigue crack growth behavior. The FCGR of the alloy at...

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Veröffentlicht in:	Scripta metallurgica et materialia 1993-05, Vol.28 (10), p.1267-1272
Hauptverfasser:	Bae, K., Nelson, H.G.
Format:	Artikel
Sprache:	eng
Schlagworte:	360103 - Metals & Alloys- Mechanical Properties AEROSPACE INDUSTRY ALLOYS ALUMINIUM ALLOYS Applied sciences CRACK PROPAGATION CRYSTAL STRUCTURE DATA Exact sciences and technology EXPERIMENTAL DATA FATIGUE FRACTURE PROPERTIES Fractures INDUSTRY INFORMATION INTERMETALLIC COMPOUNDS MATERIALS SCIENCE MECHANICAL PROPERTIES Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metallic Materials Metals. Metallurgy MICROSTRUCTURE NIOBIUM ALLOYS NUMERICAL DATA TITANIUM ALLOYS TITANIUM BASE ALLOYS
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Zusammenfassung:	The microscopic fatigue crack behavior in a Ti-24Al-11Nb alloy was investigated. Particular attention was given to the path of the fatigue crack through the microstructure, the fracture mode, and the effects of R-ratio and crack closure on the fatigue crack growth behavior. The FCGR of the alloy at R = 0.5 was an order of magnitude higher than that at R = 0.1.
ISSN:	0956-716X
DOI:	10.1016/0956-716X(93)90466-6