Fatigue and fracture of discontinuous TiC reinforced Ti-6Al-4V

Book · Sat Dec 31 00:00:00 EST 1994

OSTI ID:89877

Kant, A; Goolsby, R D ^[1]

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1. Univ. of Texas, Arlington, TX (United States)

Studies on various metal matrix composites (MMCs) in the past have indicated that MMCs show higher strength and stiffness than their unreinforced counterparts, but there is a significant loss in their ductility and toughness due to the reinforcement. Extensive research is being done in order to increase the toughness and fatigue resistance capabilities of these MMCS. Discontinuous reinforced titanium composites have received particular attention recently, due to their high strength/weight ratio and their potential use at higher temperatures. Titanium carbide reinforcement in titanium matrix appears particularly attractive, as the reinforcement is completely compatible to the matrix and high quality TiC particles are readily available. The mechanical properties of one such MMC (Ti-6Al-4V/10 v/o particulate TiC) and the unreinforced alloy (Ti-6Al-4V) were studied in this analysis. Fatigue crack growth, plane strain fracture toughness and R-curve tests were conducted in both material systems. Metallographic and fractographic studies were completed using optical and scanning electron microscopy.

• OSTI ID: 89877
• Report Number(s): CONF-9409291-; ISBN 1-56676-220-0; TRN: 95:018047
• Resource Relation: Conference: 9. technical conference of the American Society for Composites, Newark, DE (United States), 20-22 Sep 1994; Other Information: PBD: 1994; Related Information: Is Part Of Proceedings of the American Society for Composites: Ninth technical conference; PB: 1319 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
FATIGUE
FRACTURE PROPERTIES
TITANIUM BASE ALLOYS
ALUMINIUM ALLOYS
VANADIUM ALLOYS
TITANIUM CARBIDES
CRACK PROPAGATION
MICROSTRUCTURE
PARTICULATES
METALLOGRAPHY
FRACTOGRAPHY
OPTICAL MICROSCOPY
SCANNING ELECTRON MICROSCOPY
TENSILE PROPERTIES
FRACTURE MECHANICS
STRESS INTENSITY FACTORS
EXPERIMENTAL DATA