Investigation of the effect of microstructure on the R-Curve behavior of metal-ceramic composites

Conference · Sat Jul 01 04:00:00 EDT 1995

OSTI ID:196589

Ellerby, D T; Flinn, B D; Scott, W D; Bordia, R K ^[1]; Ewsuk, K G; Loehman, R E ^[2]; Fahrenholtz, W G ^[3]

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1. Washington Univ., Seattle, WA (United States). Dept. of Materials Science and Engineering
2. Sandia National Labs., Albuquerque, NM (United States)
3. New Mexico Univ., Albuquerque, NM (United States)

An investigation was made into the effect of microstructure on the peak toughness and shape of the crack growth resistance curves for two ceramic-metal composites. An Al{sup 2}O{sup 3}/Al composite formed by Reactive Metal Penetration was used along with an AlN/Al composite formed using a reactive infiltration technique. The results indicate that the toughness increases with an increase in the volume fraction of the metal phase for a particular composite composition, and the peak toughness and shape of the R-Curve also depend on the composite microstructure and metal composition.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 196589
• Report Number(s): SAND--95-1481C; CONF-950833--5; ON: DE95015089; CNN: Grant DMR-NYI-9257027
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CERAMICS
COMPOSITE MATERIALS
CRACK PROPAGATION
FRACTURE PROPERTIES
METALS
MICROSTRUCTURE