Optimization of post-consolidation heat treatment on particulate reinforced metal matrix composites

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:175451

Montilla, K; Ravichandran, G ^[1]

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1. California Institute of Technology, Pasadena, CA (United States)

Titanium/SiC particulate reinforced metal matrix composites (MMC) continue to receive a great deal of attention due to their enhanced strength, stiffness and wear characteristics. A significant limiting factor in the production of Titanium based MMCs has been the detrimental interfacial reaction zone which occurs during conventional processing techniques (i.e., extrusion, hot rolling). Shock wave consolidation has proven to be an efficient technique for producing crack free, fully dense particulate reinforced metal matrix composites with no interfacial reaction zone. The purpose of this work was to look beyond the consolidation process into post consolidation heat treatments of shock consolidated MMCS. The consolidation of the green compact is accomplished by the passage of a strong shock wave through the powder. It is widely recognized that post consolidation heat treatment is essential in achieving good mechanical properties. The identification of the optimal annealing schedule according to reinforcement size and volume fraction must be established in order to improve the overall mechanical response of the composite. A limited amount of research has been directed towards investigating annealing schedules at relatively low temperatures with an extended heating interval. The current status of this research will be presented.

• OSTI ID: 175451
• Report Number(s): CONF-950686--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
COMPOSITE MATERIALS
EXTRUSION
HEAT TREATMENTS
MECHANICAL PROPERTIES
PROCESSING
ROLLING
SILICON CARBIDES
TITANIUM