Accession Number:

AD0847651

Title:

The Study of Extrusion as a Method for Fabricating Metal Matrix Composites,

Descriptive Note:

Corporate Author:

MONSANTO RESEARCH CORP ST LOUIS MO

Personal Author(s):

• Schierding, Royce G.

Report Date:

1969-01-01

Pagination or Media Count:

34.0

Abstract:

Extrusion has been investigated as a method for fabricating metal matrix composites. The matrix was aluminum and the fibers were discontinuous boron, graphite and stainless steel and -SiC whiskers. Mixtures of aluminum flake and discontinuous fibers were extruded at temperatures exceeding 600C and at extrusion pressures of 30 - 90 ksi. The extrudate showed a high degree of fiber orientation as well as extensive fiber damage. Some strengthening and stiffening were obtained at the 10 vo loading level. Fiber damage appears to be the major limitation of the powder metallurgy approach to extrusion. Author

Descriptors:

• (*POWDER METALLURGY
• COMPOSITE MATERIALS)
• (*COMPOSITE MATERIALS
• EXTRUSION)
• WHISKERS(CRYSTALS)
• ALUMINUM ALLOYS
• BORON
• GRAPHITE
• STAINLESS STEEL
• SILICON CARBIDES
• FILAMENTS
• PARTICLE SIZE
• COMPACTING
• ISOTROPISM
• PHOTOMICROGRAPHY
• DEFECTS(MATERIALS)

Subject Categories:

• Laminates and Composite Materials
• Metallurgy and Metallography
• Fabrication Metallurgy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE