Hydrostatic Extrusion of Metal Matrix Composites Journal Articles

abstract

• The effect of hydrostatic pressure on the formability of a model Cu-W metal matrix composite (MMC) was investigated. The main experimental observation was that damaged and codeformed products were obtained from nominally identical Cu-W billets. A criterion for the suppression of damage during hydrostatic extrusion was developed. The resulting critical hydrostatic pressure criterion was estimated from slip line field theory in order to rationalize the experimental observations. The critical hydrostatic pressure for damage suppression in the W fibers depends on the ratio of fracture stress to flow stress. The analysis suggests a very important effect of both the stress state during hydrostatic extrusion and the previous processing history of the composite.

authors

• Lahaie, DJ
• Embury, Johndavid

status

• published 

publication date

• September 2003

has subject area

• 0901 Aerospace Engineering (FoR)
• 0912 Materials Engineering (FoR)
• 0913 Mechanical Engineering (FoR)
• Materials (Science Metrix)

published in

• Journal of Composite Materials  Journal

keywords

• BEHAVIOR
• DEFORMATION
• DUCTILITY
• FRACTURE
• Materials Science
• Materials Science, Composites
• PRESSURE
• SIZE
• Science & Technology
• Technology
• codeformation
• damage
• hydrostatic extrusion
• hydrostatic pressure
• metal matrix composites
• slip line fields

Digital Object Identifier (DOI)

• 10.1177/0021998303034506

start page

• 1589

end page

• 1599

volume

• 37

issue

• 17